1 /* 2 * Marvell 88E6xxx System Management Interface (SMI) support 3 * 4 * Copyright (c) 2008 Marvell Semiconductor 5 * 6 * Copyright (c) 2019 Vivien Didelot <vivien.didelot@gmail.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 #ifndef _MV88E6XXX_SMI_H 15 #define _MV88E6XXX_SMI_H 16 17 #include "chip.h" 18 19 /* Offset 0x00: SMI Command Register */ 20 #define MV88E6XXX_SMI_CMD 0x00 21 #define MV88E6XXX_SMI_CMD_BUSY 0x8000 22 #define MV88E6XXX_SMI_CMD_MODE_MASK 0x1000 23 #define MV88E6XXX_SMI_CMD_MODE_45 0x0000 24 #define MV88E6XXX_SMI_CMD_MODE_22 0x1000 25 #define MV88E6XXX_SMI_CMD_OP_MASK 0x0c00 26 #define MV88E6XXX_SMI_CMD_OP_22_WRITE 0x0400 27 #define MV88E6XXX_SMI_CMD_OP_22_READ 0x0800 28 #define MV88E6XXX_SMI_CMD_OP_45_WRITE_ADDR 0x0000 29 #define MV88E6XXX_SMI_CMD_OP_45_WRITE_DATA 0x0400 30 #define MV88E6XXX_SMI_CMD_OP_45_READ_DATA 0x0800 31 #define MV88E6XXX_SMI_CMD_OP_45_READ_DATA_INC 0x0c00 32 #define MV88E6XXX_SMI_CMD_DEV_ADDR_MASK 0x003e 33 #define MV88E6XXX_SMI_CMD_REG_ADDR_MASK 0x001f 34 35 /* Offset 0x01: SMI Data Register */ 36 #define MV88E6XXX_SMI_DATA 0x01 37 38 int mv88e6xxx_smi_init(struct mv88e6xxx_chip *chip, 39 struct mii_bus *bus, int sw_addr); 40 41 static inline int mv88e6xxx_smi_read(struct mv88e6xxx_chip *chip, 42 int dev, int reg, u16 *data) 43 { 44 if (chip->smi_ops && chip->smi_ops->read) 45 return chip->smi_ops->read(chip, dev, reg, data); 46 47 return -EOPNOTSUPP; 48 } 49 50 static inline int mv88e6xxx_smi_write(struct mv88e6xxx_chip *chip, 51 int dev, int reg, u16 data) 52 { 53 if (chip->smi_ops && chip->smi_ops->write) 54 return chip->smi_ops->write(chip, dev, reg, data); 55 56 return -EOPNOTSUPP; 57 } 58 59 #endif /* _MV88E6XXX_SMI_H */ 60