2 * Marvell 88E6xxx Switch Global 2 Registers support
4 * Copyright (c) 2008 Marvell Semiconductor
6 * Copyright (c) 2016-2017 Savoir-faire Linux Inc.
7 * Vivien Didelot <vivien.didelot@savoirfairelinux.com>
9 * Copyright (c) 2017 National Instruments
10 * Brandon Streiff <brandon.streiff@ni.com>
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.
20 /* Offset 0x16: AVB Command Register
21 * Offset 0x17: AVB Data Register
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.
27 * The "op" codes are different between the two, as well as the special
28 * port fields for global PTP and TAI configuration.
31 /* mv88e6xxx_g2_avb_read -- Read one or multiple 16-bit words.
32 * The hardware supports snapshotting up to four contiguous registers.
34 static int mv88e6xxx_g2_avb_read(struct mv88e6xxx_chip *chip, u16 readop,
40 /* Hardware can only snapshot four words. */
44 err = mv88e6xxx_g2_update(chip, MV88E6352_G2_AVB_CMD, readop);
48 for (i = 0; i < len; ++i) {
49 err = mv88e6xxx_g2_read(chip, MV88E6352_G2_AVB_DATA,
58 /* mv88e6xxx_g2_avb_write -- Write one 16-bit word. */
59 static int mv88e6xxx_g2_avb_write(struct mv88e6xxx_chip *chip, u16 writeop,
64 err = mv88e6xxx_g2_write(chip, MV88E6352_G2_AVB_DATA, data);
68 return mv88e6xxx_g2_update(chip, MV88E6352_G2_AVB_CMD, writeop);
71 static int mv88e6352_g2_avb_port_ptp_read(struct mv88e6xxx_chip *chip,
72 int port, int addr, u16 *data,
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) |
80 return mv88e6xxx_g2_avb_read(chip, readop, data, len);
83 static int mv88e6352_g2_avb_port_ptp_write(struct mv88e6xxx_chip *chip,
84 int port, int addr, u16 data)
86 u16 writeop = MV88E6352_G2_AVB_CMD_OP_WRITE | (port << 8) |
87 (MV88E6352_G2_AVB_CMD_BLOCK_PTP << 5) | addr;
89 return mv88e6xxx_g2_avb_write(chip, writeop, data);
92 static int mv88e6352_g2_avb_ptp_read(struct mv88e6xxx_chip *chip, int addr,
95 return mv88e6352_g2_avb_port_ptp_read(chip,
96 MV88E6352_G2_AVB_CMD_PORT_PTPGLOBAL,
100 static int mv88e6352_g2_avb_ptp_write(struct mv88e6xxx_chip *chip, int addr,
103 return mv88e6352_g2_avb_port_ptp_write(chip,
104 MV88E6352_G2_AVB_CMD_PORT_PTPGLOBAL,
108 static int mv88e6352_g2_avb_tai_read(struct mv88e6xxx_chip *chip, int addr,
111 return mv88e6352_g2_avb_port_ptp_read(chip,
112 MV88E6352_G2_AVB_CMD_PORT_TAIGLOBAL,
116 static int mv88e6352_g2_avb_tai_write(struct mv88e6xxx_chip *chip, int addr,
119 return mv88e6352_g2_avb_port_ptp_write(chip,
120 MV88E6352_G2_AVB_CMD_PORT_TAIGLOBAL,
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,
133 static int mv88e6165_g2_avb_tai_read(struct mv88e6xxx_chip *chip, int addr,
136 return mv88e6352_g2_avb_port_ptp_read(chip,
137 MV88E6165_G2_AVB_CMD_PORT_PTPGLOBAL,
141 static int mv88e6165_g2_avb_tai_write(struct mv88e6xxx_chip *chip, int addr,
144 return mv88e6352_g2_avb_port_ptp_write(chip,
145 MV88E6165_G2_AVB_CMD_PORT_PTPGLOBAL,
149 const struct mv88e6xxx_avb_ops mv88e6165_avb_ops = {
150 .port_ptp_read = mv88e6352_g2_avb_port_ptp_read,
151 .port_ptp_write = mv88e6352_g2_avb_port_ptp_write,
152 .ptp_read = mv88e6352_g2_avb_ptp_read,
153 .ptp_write = mv88e6352_g2_avb_ptp_write,
154 .tai_read = mv88e6165_g2_avb_tai_read,
155 .tai_write = mv88e6165_g2_avb_tai_write,
158 static int mv88e6390_g2_avb_port_ptp_read(struct mv88e6xxx_chip *chip,
159 int port, int addr, u16 *data,
162 u16 readop = (len == 1 ? MV88E6390_G2_AVB_CMD_OP_READ :
163 MV88E6390_G2_AVB_CMD_OP_READ_INCR) |
164 (port << 8) | (MV88E6352_G2_AVB_CMD_BLOCK_PTP << 5) |
167 return mv88e6xxx_g2_avb_read(chip, readop, data, len);
170 static int mv88e6390_g2_avb_port_ptp_write(struct mv88e6xxx_chip *chip,
171 int port, int addr, u16 data)
173 u16 writeop = MV88E6390_G2_AVB_CMD_OP_WRITE | (port << 8) |
174 (MV88E6352_G2_AVB_CMD_BLOCK_PTP << 5) | addr;
176 return mv88e6xxx_g2_avb_write(chip, writeop, data);
179 static int mv88e6390_g2_avb_ptp_read(struct mv88e6xxx_chip *chip, int addr,
182 return mv88e6390_g2_avb_port_ptp_read(chip,
183 MV88E6390_G2_AVB_CMD_PORT_PTPGLOBAL,
187 static int mv88e6390_g2_avb_ptp_write(struct mv88e6xxx_chip *chip, int addr,
190 return mv88e6390_g2_avb_port_ptp_write(chip,
191 MV88E6390_G2_AVB_CMD_PORT_PTPGLOBAL,
195 static int mv88e6390_g2_avb_tai_read(struct mv88e6xxx_chip *chip, int addr,
198 return mv88e6390_g2_avb_port_ptp_read(chip,
199 MV88E6390_G2_AVB_CMD_PORT_TAIGLOBAL,
203 static int mv88e6390_g2_avb_tai_write(struct mv88e6xxx_chip *chip, int addr,
206 return mv88e6390_g2_avb_port_ptp_write(chip,
207 MV88E6390_G2_AVB_CMD_PORT_TAIGLOBAL,
211 const struct mv88e6xxx_avb_ops mv88e6390_avb_ops = {
212 .port_ptp_read = mv88e6390_g2_avb_port_ptp_read,
213 .port_ptp_write = mv88e6390_g2_avb_port_ptp_write,
214 .ptp_read = mv88e6390_g2_avb_ptp_read,
215 .ptp_write = mv88e6390_g2_avb_ptp_write,
216 .tai_read = mv88e6390_g2_avb_tai_read,
217 .tai_write = mv88e6390_g2_avb_tai_write,