36 строки
984 B
C
36 строки
984 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* 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 control 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
|