/* $NetBSD: ppbus_var.h,v 1.5 2005/12/11 12:23:28 christos Exp $ */
#ifndef __PPBUS_VAR_H
#define __PPBUS_VAR_H
/* PPBUS mode masks. */
#define PPBUS_COMPATIBLE 0x01 /* Centronics compatible mode */
#define PPBUS_NIBBLE 0x02 /* reverse 4 bit mode */
#define PPBUS_PS2 0x04 /* PS/2 byte mode */
#define PPBUS_EPP 0x08 /* EPP mode, 32 bit */
#define PPBUS_ECP 0x10 /* ECP mode */
#define PPBUS_FAST 0x20 /* Fast Centronics mode */
/* mode aliases */
#define PPBUS_SPP PPBUS_NIBBLE | PPBUS_PS2 /* Won't work! */
#define PPBUS_BYTE PPBUS_PS2
#define PPBUS_MASK 0x3f
#define PPBUS_OPTIONS_MASK 0xc0
/* Useful macros for this field */
#define PPBUS_IS_EPP(mode) ((mode) & PPBUS_EPP)
#define PPBUS_IN_EPP_MODE(bus) (PPBUS_IS_EPP(ppbus_get_mode(bus)))
#define PPBUS_IN_NIBBLE_MODE(bus) (ppbus_get_mode(bus) & PPBUS_NIBBLE)
#define PPBUS_IN_PS2_MODE(bus) (ppbus_get_mode(bus) & PPBUS_PS2)
/* PPBUS capabilities */
#define PPBUS_HAS_INTR 0x01 /* Interrupt available */
#define PPBUS_HAS_DMA 0x02 /* DMA available */
#define PPBUS_HAS_FIFO 0x04 /* FIFO available */
#define PPBUS_HAS_PS2 0x08 /* PS2 mode capable */
#define PPBUS_HAS_ECP 0x10 /* ECP mode available */
#define PPBUS_HAS_EPP 0x20 /* EPP mode available */
/* IEEE flag in soft config */
#define PPBUS_DISABLE_IEEE 0x00
#define PPBUS_ENABLE_IEEE 0x01
/* List of IVARS available to ppbus device drivers */
/* #define PPBUS_IVAR_MODE 0 */
#define PPBUS_IVAR_DMA 1
#define PPBUS_IVAR_INTR 2
#define PPBUS_IVAR_EPP_PROTO 3
#define PPBUS_IVAR_IEEE 4
/* Needed by callback's implemented using callout */
#define PPBUS_IVAR_IRQSTAT 5
#define PPBUS_IVAR_DMASTAT 6
/* other fields are reserved to the ppbus internals */
/* EPP protocol versions */
#define PPBUS_EPP_1_9 0x0 /* default */
#define PPBUS_EPP_1_7 0x1
/* Parallel Port Bus sleep/wakeup queue. */
#define PPBUSPRI (PZERO+8)
#endif /* __PPBUS_VAR_H */
