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/* drivers/atm/zeprom.h - ZeitNet ZN122x EEPROM (NM93C46) declarations */

/* Written 1995,1996 by Werner Almesberger, EPFL LRC */

#ifndef DRIVER_ATM_ZEPROM_H

#define DRIVER_ATM_ZEPROM_H

/* Different versions use different control registers */

#define ZEPROM_V1_REG   PCI_VENDOR_ID   /* PCI register */

#define ZEPROM_V2_REG   0x40

/* Bits in contol register */

#define ZEPROM_SK       0x80000000      /* strobe (probably on raising edge) */

#define ZEPROM_CS       0x40000000      /* Chip Select */

#define ZEPROM_DI       0x20000000      /* Data Input */

#define ZEPROM_DO       0x10000000      /* Data Output */

#define ZEPROM_SIZE     32              /* 32 bytes */

#define ZEPROM_V1_ESI_OFF 24            /* ESI offset in EEPROM (V1) */

#define ZEPROM_V2_ESI_OFF 4             /* ESI offset in EEPROM (V2) */

#define ZEPROM_CMD_LEN  3               /* commands are three bits */

#define ZEPROM_ADDR_LEN 6               /* addresses are six bits */

/* Commands (3 bits) */

#define ZEPROM_CMD_READ 6

/* No other commands are needed. */

#endif