summaryrefslogtreecommitdiffstats
path: root/drivers/atm/zeprom.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/atm/zeprom.h
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/atm/zeprom.h')
-rw-r--r--drivers/atm/zeprom.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/atm/zeprom.h b/drivers/atm/zeprom.h
new file mode 100644
index 000000000000..019bb82490e9
--- /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