Commit | Line | Data |
---|---|---|
0d632c3d BS |
1 | /* |
2 | * Marvell 88E6xxx Switch Global 2 Registers support | |
3 | * | |
4 | * Copyright (c) 2008 Marvell Semiconductor | |
5 | * | |
6 | * Copyright (c) 2016-2017 Savoir-faire Linux Inc. | |
7 | * Vivien Didelot <vivien.didelot@savoirfairelinux.com> | |
8 | * | |
9 | * Copyright (c) 2017 National Instruments | |
10 | * Brandon Streiff <brandon.streiff@ni.com> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | */ | |
17 | ||
18 | #include "global2.h" | |
19 | ||
20 | /* Offset 0x16: AVB Command Register | |
21 | * Offset 0x17: AVB Data Register | |
22 | * | |
23 | * There are two different versions of this register interface: | |
24 | * "6352": 3-bit "op" field, 4-bit "port" field. | |
25 | * "6390": 2-bit "op" field, 5-bit "port" field. | |
26 | * | |
27 | * The "op" codes are different between the two, as well as the special | |
28 | * port fields for global PTP and TAI configuration. | |
29 | */ | |
30 | ||
31 | /* mv88e6xxx_g2_avb_read -- Read one or multiple 16-bit words. | |
32 | * The hardware supports snapshotting up to four contiguous registers. | |
33 | */ | |
34 | static int mv88e6xxx_g2_avb_read(struct mv88e6xxx_chip *chip, u16 readop, | |
35 | u16 *data, int len) | |
36 | { | |
37 | int err; | |
38 | int i; | |
39 | ||
40 | /* Hardware can only snapshot four words. */ | |
41 | if (len > 4) | |
42 | return -E2BIG; | |
43 | ||
44 | err = mv88e6xxx_g2_update(chip, MV88E6352_G2_AVB_CMD, readop); | |
45 | if (err) | |
46 | return err; | |
47 | ||
48 | for (i = 0; i < len; ++i) { | |
49 | err = mv88e6xxx_g2_read(chip, MV88E6352_G2_AVB_DATA, | |
50 | &data[i]); | |
51 | if (err) | |
52 | return err; | |
53 | } | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | /* mv88e6xxx_g2_avb_write -- Write one 16-bit word. */ | |
59 | static int mv88e6xxx_g2_avb_write(struct mv88e6xxx_chip *chip, u16 writeop, | |
60 | u16 data) | |
61 | { | |
62 | int err; | |
63 | ||
64 | err = mv88e6xxx_g2_write(chip, MV88E6352_G2_AVB_DATA, data); | |
65 | if (err) | |
66 | return err; | |
67 | ||
68 | return mv88e6xxx_g2_update(chip, MV88E6352_G2_AVB_CMD, writeop); | |
69 | } | |
70 | ||
71 | static int mv88e6352_g2_avb_port_ptp_read(struct mv88e6xxx_chip *chip, | |
72 | int port, int addr, u16 *data, | |
73 | int len) | |
74 | { | |
75 | u16 readop = (len == 1 ? MV88E6352_G2_AVB_CMD_OP_READ : | |
76 | MV88E6352_G2_AVB_CMD_OP_READ_INCR) | | |
77 | (port << 8) | (MV88E6352_G2_AVB_CMD_BLOCK_PTP << 5) | | |
78 | addr; | |
79 | ||
80 | return mv88e6xxx_g2_avb_read(chip, readop, data, len); | |
81 | } | |
82 | ||
83 | static int mv88e6352_g2_avb_port_ptp_write(struct mv88e6xxx_chip *chip, | |
84 | int port, int addr, u16 data) | |
85 | { | |
86 | u16 writeop = MV88E6352_G2_AVB_CMD_OP_WRITE | (port << 8) | | |
87 | (MV88E6352_G2_AVB_CMD_BLOCK_PTP << 5) | addr; | |
88 | ||
89 | return mv88e6xxx_g2_avb_write(chip, writeop, data); | |
90 | } | |
91 | ||
92 | static int mv88e6352_g2_avb_ptp_read(struct mv88e6xxx_chip *chip, int addr, | |
93 | u16 *data, int len) | |
94 | { | |
95 | return mv88e6352_g2_avb_port_ptp_read(chip, | |
96 | MV88E6352_G2_AVB_CMD_PORT_PTPGLOBAL, | |
97 | addr, data, len); | |
98 | } | |
99 | ||
100 | static int mv88e6352_g2_avb_ptp_write(struct mv88e6xxx_chip *chip, int addr, | |
101 | u16 data) | |
102 | { | |
103 | return mv88e6352_g2_avb_port_ptp_write(chip, | |
104 | MV88E6352_G2_AVB_CMD_PORT_PTPGLOBAL, | |
105 | addr, data); | |
106 | } | |
107 | ||
108 | static int mv88e6352_g2_avb_tai_read(struct mv88e6xxx_chip *chip, int addr, | |
109 | u16 *data, int len) | |
110 | { | |
111 | return mv88e6352_g2_avb_port_ptp_read(chip, | |
112 | MV88E6352_G2_AVB_CMD_PORT_TAIGLOBAL, | |
113 | addr, data, len); | |
114 | } | |
115 | ||
116 | static int mv88e6352_g2_avb_tai_write(struct mv88e6xxx_chip *chip, int addr, | |
117 | u16 data) | |
118 | { | |
119 | return mv88e6352_g2_avb_port_ptp_write(chip, | |
120 | MV88E6352_G2_AVB_CMD_PORT_TAIGLOBAL, | |
121 | addr, data); | |
122 | } | |
123 | ||
124 | const struct mv88e6xxx_avb_ops mv88e6352_avb_ops = { | |
125 | .port_ptp_read = mv88e6352_g2_avb_port_ptp_read, | |
126 | .port_ptp_write = mv88e6352_g2_avb_port_ptp_write, | |
127 | .ptp_read = mv88e6352_g2_avb_ptp_read, | |
128 | .ptp_write = mv88e6352_g2_avb_ptp_write, | |
129 | .tai_read = mv88e6352_g2_avb_tai_read, | |
130 | .tai_write = mv88e6352_g2_avb_tai_write, | |
131 | }; | |
132 | ||
133 | static int mv88e6390_g2_avb_port_ptp_read(struct mv88e6xxx_chip *chip, | |
134 | int port, int addr, u16 *data, | |
135 | int len) | |
136 | { | |
137 | u16 readop = (len == 1 ? MV88E6390_G2_AVB_CMD_OP_READ : | |
138 | MV88E6390_G2_AVB_CMD_OP_READ_INCR) | | |
139 | (port << 8) | (MV88E6352_G2_AVB_CMD_BLOCK_PTP << 5) | | |
140 | addr; | |
141 | ||
142 | return mv88e6xxx_g2_avb_read(chip, readop, data, len); | |
143 | } | |
144 | ||
145 | static int mv88e6390_g2_avb_port_ptp_write(struct mv88e6xxx_chip *chip, | |
146 | int port, int addr, u16 data) | |
147 | { | |
148 | u16 writeop = MV88E6390_G2_AVB_CMD_OP_WRITE | (port << 8) | | |
149 | (MV88E6352_G2_AVB_CMD_BLOCK_PTP << 5) | addr; | |
150 | ||
151 | return mv88e6xxx_g2_avb_write(chip, writeop, data); | |
152 | } | |
153 | ||
154 | static int mv88e6390_g2_avb_ptp_read(struct mv88e6xxx_chip *chip, int addr, | |
155 | u16 *data, int len) | |
156 | { | |
157 | return mv88e6390_g2_avb_port_ptp_read(chip, | |
158 | MV88E6390_G2_AVB_CMD_PORT_PTPGLOBAL, | |
159 | addr, data, len); | |
160 | } | |
161 | ||
162 | static int mv88e6390_g2_avb_ptp_write(struct mv88e6xxx_chip *chip, int addr, | |
163 | u16 data) | |
164 | { | |
165 | return mv88e6390_g2_avb_port_ptp_write(chip, | |
166 | MV88E6390_G2_AVB_CMD_PORT_PTPGLOBAL, | |
167 | addr, data); | |
168 | } | |
169 | ||
170 | static int mv88e6390_g2_avb_tai_read(struct mv88e6xxx_chip *chip, int addr, | |
171 | u16 *data, int len) | |
172 | { | |
173 | return mv88e6390_g2_avb_port_ptp_read(chip, | |
174 | MV88E6390_G2_AVB_CMD_PORT_TAIGLOBAL, | |
175 | addr, data, len); | |
176 | } | |
177 | ||
178 | static int mv88e6390_g2_avb_tai_write(struct mv88e6xxx_chip *chip, int addr, | |
179 | u16 data) | |
180 | { | |
181 | return mv88e6390_g2_avb_port_ptp_write(chip, | |
182 | MV88E6390_G2_AVB_CMD_PORT_TAIGLOBAL, | |
183 | addr, data); | |
184 | } | |
185 | ||
186 | const struct mv88e6xxx_avb_ops mv88e6390_avb_ops = { | |
187 | .port_ptp_read = mv88e6390_g2_avb_port_ptp_read, | |
188 | .port_ptp_write = mv88e6390_g2_avb_port_ptp_write, | |
189 | .ptp_read = mv88e6390_g2_avb_ptp_read, | |
190 | .ptp_write = mv88e6390_g2_avb_ptp_write, | |
191 | .tai_read = mv88e6390_g2_avb_tai_read, | |
192 | .tai_write = mv88e6390_g2_avb_tai_write, | |
193 | }; |