drivers/net/hplance.h

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 1 /* Random defines and structures for the HP Lance driver.
 2  * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk>
 3  * Based on the Sun Lance driver and the NetBSD HP Lance driver
 4  */
 5
 6 /* Registers */
 7 struct hplance_reg
 8 {
 9  u_char pad0;
 10 volatile u_char id;/* DIO register: ID byte */
 11  u_char pad1;
 12 volatile u_char status;/* DIO register: interrupt enable */
 13 };
 14
 15 /* Control and status bits for the hplance->status register */
 16 #define LE_IE 0x80/* interrupt enable */
 17 #define LE_IR 0x40/* interrupt requested */
 18 #define LE_LOCK 0x08/* lock status register */
 19 #define LE_ACK 0x04/* ack of lock */
 20 #define LE_JAB 0x02/* loss of tx clock (???) */
 21 /* We can also extract the IPL from the status register with the standard
 22  * DIO_IPL(hplance) macro, or using dio_scodetoipl()
 23  */
 24
 25 /* These are the offsets for the DIO regs (hplance_reg), lance_ioreg,
 26  * memory and NVRAM:
 27  */
 28 #define HPLANCE_IDOFF 0/* board baseaddr, struct hplance_reg */
 29 #define HPLANCE_REGOFF 0x4000/* struct lance_regs */
 30 #define HPLANCE_MEMOFF 0x8000/* struct lance_init_block */
 31 #define HPLANCE_NVRAMOFF 0xC008/* etheraddress as one *nibble* per byte */