hplance.h

来自「linux 内核源代码」· C头文件 代码 · 共 27 行

/* Random defines and structures for the HP Lance driver.
 * Copyright (C) 05/1998 Peter Maydell <[e-mail]>
 * Based on the Sun Lance driver and the NetBSD HP Lance driver
 */

/* Registers */
#define HPLANCE_ID		0x01		/* DIO register: ID byte */
#define HPLANCE_STATUS		0x03		/* DIO register: interrupt enable/status */

/* Control and status bits for the 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 */
#define HPLANCE_REGOFF 0x4000                     /* lance registers */
#define HPLANCE_MEMOFF 0x8000                     /* struct lance_init_block */
#define HPLANCE_NVRAMOFF 0xC008                   /* etheraddress as one *nibble* per byte */