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1/* SPDX-License-Identifier: GPL-2.0 */2/* drivers/atm/zeprom.h - ZeitNet ZN122x EEPROM (NM93C46) declarations */3 4/* Written 1995,1996 by Werner Almesberger, EPFL LRC */5 6 7#ifndef DRIVER_ATM_ZEPROM_H8#define DRIVER_ATM_ZEPROM_H9 10/* Different versions use different control registers */11 12#define ZEPROM_V1_REG PCI_VENDOR_ID /* PCI register */13#define ZEPROM_V2_REG 0x4014 15/* Bits in control register */16 17#define ZEPROM_SK 0x80000000 /* strobe (probably on raising edge) */18#define ZEPROM_CS 0x40000000 /* Chip Select */19#define ZEPROM_DI 0x20000000 /* Data Input */20#define ZEPROM_DO 0x10000000 /* Data Output */21 22#define ZEPROM_SIZE 32 /* 32 bytes */23#define ZEPROM_V1_ESI_OFF 24 /* ESI offset in EEPROM (V1) */24#define ZEPROM_V2_ESI_OFF 4 /* ESI offset in EEPROM (V2) */25 26#define ZEPROM_CMD_LEN 3 /* commands are three bits */27#define ZEPROM_ADDR_LEN 6 /* addresses are six bits */28 29/* Commands (3 bits) */30 31#define ZEPROM_CMD_READ 632 33/* No other commands are needed. */34 35#endif36