Initial import

1 files changed, 34 insertions, 0 deletions

diff --git a/drivers/atm/zeprom.h b/drivers/atm/zeprom.h
new file mode 100644
index 000000000..019bb8249
--- /dev/null
+++ b/drivers/atm/zeprom.h
@@ -0,0 +1,34 @@
+/* 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