File: /usr/src/linux/drivers/atm/zeprom.h

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