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;
};