/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /*************************************************************************** *    copyright		   : (C) 2002 by Frank Mori Hess ***************************************************************************/ #ifndef _GPIB_H#define _GPIB_H #define GPIB_MAX_NUM_BOARDS 16#define GPIB_MAX_NUM_DESCRIPTORS 0x1000 enum ibsta_bit_numbers {	DCAS_NUM = 0,	DTAS_NUM = 1,	LACS_NUM = 2,	TACS_NUM = 3,	ATN_NUM = 4,	CIC_NUM = 5,	REM_NUM = 6,	LOK_NUM = 7,	CMPL_NUM = 8,	EVENT_NUM = 9,	SPOLL_NUM = 10,	RQS_NUM = 11,	SRQI_NUM = 12,	END_NUM = 13,	TIMO_NUM = 14,	ERR_NUM = 15}; /* IBSTA status bits (returned by all functions) */enum ibsta_bits {	DCAS = (1 << DCAS_NUM),	/* device clear state */	DTAS = (1 << DTAS_NUM),	/* device trigger state */	LACS = (1 <<  LACS_NUM),	/* GPIB interface is addressed as Listener */	TACS = (1 <<  TACS_NUM),	/* GPIB interface is addressed as Talker */	ATN = (1 <<  ATN_NUM),	/* Attention is asserted */	CIC = (1 <<  CIC_NUM),	/* GPIB interface is Controller-in-Charge */	REM = (1 << REM_NUM),	/* remote state */	LOK = (1 << LOK_NUM),	/* lockout state */	CMPL = (1 <<  CMPL_NUM),	/* I/O is complete  */	EVENT = (1 << EVENT_NUM),	/* DCAS, DTAS, or IFC has occurred */	SPOLL = (1 << SPOLL_NUM),	/* board serial polled by busmaster */	RQS = (1 <<  RQS_NUM),	/* Device requesting service  */	SRQI = (1 << SRQI_NUM),	/* SRQ is asserted */	END = (1 << END_NUM),	/* EOI or EOS encountered */	TIMO = (1 << TIMO_NUM),	/* Time limit on I/O or wait function exceeded */	ERR = (1 << ERR_NUM),	/* Function call terminated on error */ 	device_status_mask = ERR | TIMO | END | CMPL | RQS,	board_status_mask = ERR | TIMO | END | CMPL | SPOLL |		EVENT | LOK | REM | CIC | ATN | TACS | LACS | DTAS | DCAS | SRQI,}; /* End-of-string (EOS) modes for use with ibeos */ enum eos_flags {	EOS_MASK = 0x1c00,	REOS = 0x0400,		/* Terminate reads on EOS	*/	XEOS = 0x800,	/* assert EOI when EOS char is sent */	BIN = 0x1000		/* Do 8-bit compare on EOS	*/}; /* GPIB Bus Control Lines bit vector */enum bus_control_line {	VALID_DAV = 0x01,	VALID_NDAC = 0x02,	VALID_NRFD = 0x04,	VALID_IFC = 0x08,	VALID_REN = 0x10,	VALID_SRQ = 0x20,	VALID_ATN = 0x40,	VALID_EOI = 0x80,	VALID_ALL = 0xff,	BUS_DAV = 0x0100,		/* DAV	line status bit */	BUS_NDAC = 0x0200,		/* NDAC line status bit */	BUS_NRFD = 0x0400,		/* NRFD line status bit */	BUS_IFC = 0x0800,		/* IFC	line status bit */	BUS_REN = 0x1000,		/* REN	line status bit */	BUS_SRQ = 0x2000,		/* SRQ	line status bit */	BUS_ATN = 0x4000,		/* ATN	line status bit */	BUS_EOI = 0x8000		/* EOI	line status bit */}; enum ppe_bits {	PPC_DISABLE = 0x10,	PPC_SENSE = 0x8,	/* parallel poll sense bit	*/	PPC_DIO_MASK = 0x7}; enum {	request_service_bit = 0x40,}; enum gpib_events {	EVENT_NONE = 0,	EVENT_DEV_TRG = 1,	EVENT_DEV_CLR = 2,	EVENT_IFC = 3}; #endif	/* _GPIB_H */