drivers/char/rio/port.h

/*
** -----------------------------------------------------------------------------
**
**  Perle Specialix driver for Linux
**  Ported from existing RIO Driver for SCO sources.
 *
 *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
**	Module		: port.h
**	SID		: 1.3
**	Last Modified	: 11/6/98 11:34:12
**	Retrieved	: 11/6/98 11:34:21
**
**  ident @(#)port.h	1.3
**
** -----------------------------------------------------------------------------
*/

#ifndef	__rio_port_h__
#define	__rio_port_h__

#ifdef SCCS_LABELS
static char *_port_h_sccs_ = "@(#)port.h	1.3";
#endif


#undef VPIX


/*
** the port data structure - one per port in the system
*/

#ifdef STATS
struct RIOStats {
	/*
	 ** interrupt statistics
	 */
	uint BreakIntCnt;
	uint ModemOffCnt;
	uint ModemOnCnt;
	uint RxIntCnt;
	uint TxIntCnt;
	/*
	 ** throughput statistics
	 */
	uint RxCharCnt;
	uint RxPktCnt;
	uint RxSaveCnt;
	uint TxCharCnt;
	uint TxPktCnt;
	/*
	 ** driver entry statistics
	 */
	uint CloseCnt;
	uint IoctlCnt;
	uint OpenCnt;
	uint ReadCnt;
	uint WriteCnt;
	/*
	 ** proc statistics
	 */
	uint BlockCnt;
	uint OutputCnt;
	uint ResumeCnt;
	uint RflushCnt;
	uint SuspendCnt;
	uint TbreakCnt;
	uint TimeoutCnt;
	uint UnblockCnt;
	uint WflushCnt;
	uint WFBodgeCnt;
};
#endif

/*
**	Port data structure
*/
struct Port {
	struct gs_port gs;
	int PortNum;		/* RIO port no., 0-511 */
	struct Host *HostP;
	volatile caddr_t Caddr;
	ushort HostPort;	/* Port number on host card */
	uchar RupNum;		/* Number of RUP for port */
	uchar ID2;		/* Second ID of RTA for port */
	ulong State;		/* FLAGS for open & xopen */
#define	RIO_LOPEN	0x00001	/* Local open */
#define	RIO_MOPEN	0x00002	/* Modem open */
#define	RIO_WOPEN	0x00004	/* Waiting for open */
#define	RIO_CLOSING	0x00008	/* The port is being close */
#define	RIO_XPBUSY	0x00010	/* Transparent printer busy */
#define	RIO_BREAKING	0x00020	/* Break in progress */
#define	RIO_DIRECT	0x00040	/* Doing Direct output */
#define	RIO_EXCLUSIVE	0x00080	/* Stream open for exclusive use */
#define	RIO_NDELAY	0x00100	/* Stream is open FNDELAY */
#define	RIO_CARR_ON	0x00200	/* Stream has carrier present */
#define	RIO_XPWANTR	0x00400	/* Stream wanted by Xprint */
#define	RIO_RBLK	0x00800	/* Stream is read-blocked */
#define	RIO_BUSY	0x01000	/* Stream is BUSY for write */
#define	RIO_TIMEOUT	0x02000	/* Stream timeout in progress */
#define	RIO_TXSTOP	0x04000	/* Stream output is stopped */
#define	RIO_WAITFLUSH	0x08000	/* Stream waiting for flush */
#define	RIO_DYNOROD	0x10000	/* Drain failed */
#define	RIO_DELETED	0x20000	/* RTA has been deleted */
#define RIO_ISSCANCODE	0x40000	/* This line is in scancode mode */
#define	RIO_USING_EUC	0x100000	/* Using extended Unix chars */
#define	RIO_CAN_COOK	0x200000	/* This line can do cooking */
#define RIO_TRIAD_MODE  0x400000	/* Enable TRIAD special ops. */
#define RIO_TRIAD_BLOCK 0x800000	/* Next read will block */
#define RIO_TRIAD_FUNC  0x1000000	/* Seen a function key coming in */
#define RIO_THROTTLE_RX 0x2000000	/* RX needs to be throttled. */

	ulong Config;		/* FLAGS for NOREAD.... */
#define	RIO_NOREAD	0x0001	/* Are not allowed to read port */
#define	RIO_NOWRITE	0x0002	/* Are not allowed to write port */
#define	RIO_NOXPRINT	0x0004	/* Are not allowed to xprint port */
#define	RIO_NOMASK	0x0007	/* All not allowed things */
#define RIO_IXANY	0x0008	/* Port is allowed ixany */
#define	RIO_MODEM	0x0010	/* Stream is a modem device */
#define	RIO_IXON	0x0020	/* Port is allowed ixon */
#define RIO_WAITDRAIN	0x0040	/* Wait for port to completely drain */
#define RIO_MAP_50_TO_50	0x0080	/* Map 50 baud to 50 baud */
#define RIO_MAP_110_TO_110	0x0100	/* Map 110 baud to 110 baud */

/*
** 15.10.1998 ARG - ESIL 0761 prt fix
** As LynxOS does not appear to support Hardware Flow Control .....
** Define our own flow control flags in 'Config'.
*/
#define RIO_CTSFLOW	0x0200	/* RIO's own CTSFLOW flag */
#define RIO_RTSFLOW	0x0400	/* RIO's own RTSFLOW flag */


	struct PHB *PhbP;	/* pointer to PHB for port */
	WORD *TxAdd;		/* Add packets here */
	WORD *TxStart;		/* Start of add array */
	WORD *TxEnd;		/* End of add array */
	WORD *RxRemove;		/* Remove packets here */
	WORD *RxStart;		/* Start of remove array */
	WORD *RxEnd;		/* End of remove array */
	uint RtaUniqueNum;	/* Unique number of RTA */
	ushort PortState;	/* status of port */
	ushort ModemState;	/* status of modem lines */
	ulong ModemLines;	/* Modem bits sent to RTA */
	uchar CookMode;		/* who expands CR/LF? */
	uchar ParamSem;		/* Prevent write during param */
	uchar Mapped;		/* if port mapped onto host */
	uchar SecondBlock;	/* if port belongs to 2nd block
				   of 16 port RTA */
	uchar InUse;		/* how many pre-emptive cmds */
	uchar Lock;		/* if params locked */
	uchar Store;		/* if params stored across closes */
	uchar FirstOpen;	/* TRUE if first time port opened */
	uchar FlushCmdBodge;	/* if doing a (non)flush */
	uchar MagicFlags;	/* require intr processing */
#define	MAGIC_FLUSH	0x01	/* mirror of WflushFlag */
#define	MAGIC_REBOOT	0x02	/* RTA re-booted, re-open ports */
#define	MORE_OUTPUT_EYGOR 0x04	/* riotproc failed to empty clists */
	uchar WflushFlag;	/* 1 How many WFLUSHs active */
/*
** Transparent print stuff
*/
	struct Xprint {
#ifndef MAX_XP_CTRL_LEN
#define MAX_XP_CTRL_LEN		16	/* ALSO IN DAEMON.H */
#endif
		uint XpCps;
		char XpOn[MAX_XP_CTRL_LEN];
		char XpOff[MAX_XP_CTRL_LEN];
		ushort XpLen;	/* strlen(XpOn)+strlen(XpOff) */
		uchar XpActive;
		uchar XpLastTickOk;	/* TRUE if we can process */
#define	XP_OPEN		00001
#define	XP_RUNABLE	00002
		struct ttystatics *XttyP;
	} Xprint;
#ifdef VPIX
	v86_t *StashP;
	uint IntMask;
	struct termss VpixSs;
	uchar ModemStatusReg;	/* Modem status register */
#endif
	uchar RxDataStart;
	uchar Cor2Copy;		/* copy of COR2 */
	char *Name;		/* points to the Rta's name */
#ifdef STATS
	struct RIOStats Stat;	/* ports statistics */
#endif
	char *TxRingBuffer;
	ushort TxBufferIn;	/* New data arrives here */
	ushort TxBufferOut;	/* Intr removes data here */
	ushort OldTxBufferOut;	/* Indicates if draining */
	int TimeoutId;		/* Timeout ID */
	uint Debug;
	uchar WaitUntilBooted;	/* True if open should block */
	uint statsGather;	/* True if gathering stats */
	ulong txchars;		/* Chars transmitted */
	ulong rxchars;		/* Chars received */
	ulong opens;		/* port open count */
	ulong closes;		/* port close count */
	ulong ioctls;		/* ioctl count */
	uchar LastRxTgl;	/* Last state of rx toggle bit */
	spinlock_t portSem;	/* Lock using this sem */
	int MonitorTstate;	/* Monitoring ? */
	int timeout_id;		/* For calling 100 ms delays */
	int timeout_sem;	/* For calling 100 ms delays */
	int firstOpen;		/* First time open ? */
	char *p;		/* save the global struc here .. */
};

struct ModuleInfo {
	char *Name;
	uint Flags[4];		/* one per port on a module */
};
#endif

/*
** This struct is required because trying to grab an entire Port structure
** runs into problems with differing struct sizes between driver and config.
*/
struct PortParams {
	uint Port;
	ulong Config;
	ulong State;
	struct ttystatics *TtyP;
};