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18abed21 VD |
1 | /* |
2 | * Marvell 88E6xxx Switch Port Registers support | |
3 | * | |
4 | * Copyright (c) 2008 Marvell Semiconductor | |
5 | * | |
6 | * Copyright (c) 2016 Vivien Didelot <vivien.didelot@savoirfairelinux.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | */ | |
13 | ||
14 | #include "mv88e6xxx.h" | |
15 | #include "port.h" | |
16 | ||
17 | int mv88e6xxx_port_read(struct mv88e6xxx_chip *chip, int port, int reg, | |
18 | u16 *val) | |
19 | { | |
20 | int addr = chip->info->port_base_addr + port; | |
21 | ||
22 | return mv88e6xxx_read(chip, addr, reg, val); | |
23 | } | |
24 | ||
25 | int mv88e6xxx_port_write(struct mv88e6xxx_chip *chip, int port, int reg, | |
26 | u16 val) | |
27 | { | |
28 | int addr = chip->info->port_base_addr + port; | |
29 | ||
30 | return mv88e6xxx_write(chip, addr, reg, val); | |
31 | } | |
e28def33 VD |
32 | |
33 | /* Offset 0x04: Port Control Register */ | |
34 | ||
35 | static const char * const mv88e6xxx_port_state_names[] = { | |
36 | [PORT_CONTROL_STATE_DISABLED] = "Disabled", | |
37 | [PORT_CONTROL_STATE_BLOCKING] = "Blocking/Listening", | |
38 | [PORT_CONTROL_STATE_LEARNING] = "Learning", | |
39 | [PORT_CONTROL_STATE_FORWARDING] = "Forwarding", | |
40 | }; | |
41 | ||
42 | int mv88e6xxx_port_set_state(struct mv88e6xxx_chip *chip, int port, u8 state) | |
43 | { | |
44 | u16 reg; | |
45 | int err; | |
46 | ||
47 | err = mv88e6xxx_port_read(chip, port, PORT_CONTROL, ®); | |
48 | if (err) | |
49 | return err; | |
50 | ||
51 | reg &= ~PORT_CONTROL_STATE_MASK; | |
52 | reg |= state; | |
53 | ||
54 | err = mv88e6xxx_port_write(chip, port, PORT_CONTROL, reg); | |
55 | if (err) | |
56 | return err; | |
57 | ||
58 | netdev_dbg(chip->ds->ports[port].netdev, "PortState set to %s\n", | |
59 | mv88e6xxx_port_state_names[state]); | |
60 | ||
61 | return 0; | |
62 | } | |
5a7921f4 | 63 | |
b4e48c50 VD |
64 | /* Offset 0x05: Port Control 1 */ |
65 | ||
5a7921f4 VD |
66 | /* Offset 0x06: Port Based VLAN Map */ |
67 | ||
68 | int mv88e6xxx_port_set_vlan_map(struct mv88e6xxx_chip *chip, int port, u16 map) | |
69 | { | |
70 | const u16 mask = GENMASK(mv88e6xxx_num_ports(chip) - 1, 0); | |
71 | u16 reg; | |
72 | int err; | |
73 | ||
74 | err = mv88e6xxx_port_read(chip, port, PORT_BASE_VLAN, ®); | |
75 | if (err) | |
76 | return err; | |
77 | ||
78 | reg &= ~mask; | |
79 | reg |= map & mask; | |
80 | ||
81 | err = mv88e6xxx_port_write(chip, port, PORT_BASE_VLAN, reg); | |
82 | if (err) | |
83 | return err; | |
84 | ||
85 | netdev_dbg(chip->ds->ports[port].netdev, "VLANTable set to %.3x\n", | |
86 | map); | |
87 | ||
88 | return 0; | |
89 | } | |
b4e48c50 VD |
90 | |
91 | int mv88e6xxx_port_get_fid(struct mv88e6xxx_chip *chip, int port, u16 *fid) | |
92 | { | |
93 | const u16 upper_mask = (mv88e6xxx_num_databases(chip) - 1) >> 4; | |
94 | u16 reg; | |
95 | int err; | |
96 | ||
97 | /* Port's default FID lower 4 bits are located in reg 0x06, offset 12 */ | |
98 | err = mv88e6xxx_port_read(chip, port, PORT_BASE_VLAN, ®); | |
99 | if (err) | |
100 | return err; | |
101 | ||
102 | *fid = (reg & 0xf000) >> 12; | |
103 | ||
104 | /* Port's default FID upper bits are located in reg 0x05, offset 0 */ | |
105 | if (upper_mask) { | |
106 | err = mv88e6xxx_port_read(chip, port, PORT_CONTROL_1, ®); | |
107 | if (err) | |
108 | return err; | |
109 | ||
110 | *fid |= (reg & upper_mask) << 4; | |
111 | } | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
116 | int mv88e6xxx_port_set_fid(struct mv88e6xxx_chip *chip, int port, u16 fid) | |
117 | { | |
118 | const u16 upper_mask = (mv88e6xxx_num_databases(chip) - 1) >> 4; | |
119 | u16 reg; | |
120 | int err; | |
121 | ||
122 | if (fid >= mv88e6xxx_num_databases(chip)) | |
123 | return -EINVAL; | |
124 | ||
125 | /* Port's default FID lower 4 bits are located in reg 0x06, offset 12 */ | |
126 | err = mv88e6xxx_port_read(chip, port, PORT_BASE_VLAN, ®); | |
127 | if (err) | |
128 | return err; | |
129 | ||
130 | reg &= 0x0fff; | |
131 | reg |= (fid & 0x000f) << 12; | |
132 | ||
133 | err = mv88e6xxx_port_write(chip, port, PORT_BASE_VLAN, reg); | |
134 | if (err) | |
135 | return err; | |
136 | ||
137 | /* Port's default FID upper bits are located in reg 0x05, offset 0 */ | |
138 | if (upper_mask) { | |
139 | err = mv88e6xxx_port_read(chip, port, PORT_CONTROL_1, ®); | |
140 | if (err) | |
141 | return err; | |
142 | ||
143 | reg &= ~upper_mask; | |
144 | reg |= (fid >> 4) & upper_mask; | |
145 | ||
146 | err = mv88e6xxx_port_write(chip, port, PORT_CONTROL_1, reg); | |
147 | if (err) | |
148 | return err; | |
149 | } | |
150 | ||
151 | netdev_dbg(chip->ds->ports[port].netdev, "FID set to %u\n", fid); | |
152 | ||
153 | return 0; | |
154 | } |