1 /* drivers/atm/zeprom.h - ZeitNet ZN122x EEPROM (NM93C46) declarations */ 2 3 /* Written 1995,1996 by Werner Almesberger, EPFL LRC */ 4 5 6 #ifndef DRIVER_ATM_ZEPROM_H 7 #define DRIVER_ATM_ZEPROM_H 8 9 /* Different versions use different control registers */ 10 11 #define ZEPROM_V1_REG PCI_VENDOR_ID /* PCI register */ 12 #define ZEPROM_V2_REG 0x40 13 14 /* Bits in contol register */ 15 16 #define ZEPROM_SK 0x80000000 /* strobe (probably on raising edge) */ 17 #define ZEPROM_CS 0x40000000 /* Chip Select */ 18 #define ZEPROM_DI 0x20000000 /* Data Input */ 19 #define ZEPROM_DO 0x10000000 /* Data Output */ 20 21 #define ZEPROM_SIZE 32 /* 32 bytes */ 22 #define ZEPROM_V1_ESI_OFF 24 /* ESI offset in EEPROM (V1) */ 23 #define ZEPROM_V2_ESI_OFF 4 /* ESI offset in EEPROM (V2) */ 24 25 #define ZEPROM_CMD_LEN 3 /* commands are three bits */ 26 #define ZEPROM_ADDR_LEN 6 /* addresses are six bits */ 27 28 /* Commands (3 bits) */ 29 30 #define ZEPROM_CMD_READ 6 31 32 /* No other commands are needed. */ 33 34 #endif 35