drivers/net/hplance.h

   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 */