hplance.h
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上传日期:2013-02-24
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- /* Random defines and structures for the HP Lance driver.
- * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk>
- * Based on the Sun Lance driver and the NetBSD HP Lance driver
- */
- /* Registers */
- struct hplance_reg
- {
- u_char pad0;
- volatile u_char id; /* DIO register: ID byte */
- u_char pad1;
- volatile u_char status; /* DIO register: interrupt enable */
- };
- /* Control and status bits for the hplance->status register */
- #define LE_IE 0x80 /* interrupt enable */
- #define LE_IR 0x40 /* interrupt requested */
- #define LE_LOCK 0x08 /* lock status register */
- #define LE_ACK 0x04 /* ack of lock */
- #define LE_JAB 0x02 /* loss of tx clock (???) */
- /* We can also extract the IPL from the status register with the standard
- * DIO_IPL(hplance) macro, or using dio_scodetoipl()
- */
- /* These are the offsets for the DIO regs (hplance_reg), lance_ioreg,
- * memory and NVRAM:
- */
- #define HPLANCE_IDOFF 0 /* board baseaddr, struct hplance_reg */
- #define HPLANCE_REGOFF 0x4000 /* struct lance_regs */
- #define HPLANCE_MEMOFF 0x8000 /* struct lance_init_block */
- #define HPLANCE_NVRAMOFF 0xC008 /* etheraddress as one *nibble* per byte */