4.4BSD/usr/src/sys/vax/if/ACC/driver/if_pivar.h
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/* */
/* */
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/* \________________________________________________________/ */
/* */
/* Copyright (c) 1988 by Advanced Computer Communications */
/* 720 Santa Barbara Street, Santa Barbara, California 93101 */
/* (805) 963-9431 */
/* */
/* */
/* File: if_pivar.h */
/* */
/* Author: Brad Engstrom. */
/* */
/* Project: UNIX DDA-X.25 Network Programmers */
/* Interface for ACP 5250 and ACP 6250 */
/* */
/* Function: This file contains definitions of the PI */
/* data structures and ioctl indicators. */
/* */
/* Revision History: */
/* */
/* 06-Sep-1988: V1.0 - Brad Engstrom */
/* First generated */
/* */
/*************************************************************************/
/*
* Ioctl's have the command encoded in the lower word,
* and the size of any in or out parameters in the upper
* word. The high 2 bits of the upper word are used
* to encode the in/out status of the parameter; for now
* we restrict parameters to at most 128 bytes.
*/
/* this structure is used when writing or reading data data */
struct pi_dblock
{
caddr_t dataptr; /* pointer to user data to be written */
u_int length; /* length of data pointed to by dataptr */
u_short lcn; /* logical channel to send data out on */
u_char func; /* read status , write function value */
u_char subfunc; /* read substatus, write subfunction value */
u_short flags; /* special flags */
};
/* pi_dblock.flags: The follwing values can be used to set bits */
#define DB_NONBLOCK 0x01 /* non-blocking read or write */
typedef struct proto_range
{
u_char lower; /* lower bound on protocol range (inclusive) */
u_char upper; /* upper bound on protocol range (inclusive) */
} proto_range;
/* data write */
#define XIOWRITE _IOWR(t, 1, struct pi_dblock)
/* data read */
#define XIOREAD _IOWR(t, 2, struct pi_dblock)
/* see if data is ready to be read on a particular channel.
* The field will return the number of pending data bytes.
*/
#define XIORPEND _IOR(t, 3, int)
/* allow rings on this minor device. The proto_range structure specifies
* the lower and upper bounds on the protocol byte of incomming calls
*/
#define XIOACCRING _IOW(t, 4, proto_range)
/* specify that a protocol not requested by anyone else will be accepted on
* this channel.
*/
#define XIOANYPROTO _IO(t, 5)
/* reserve an lcn for use by this channel (minor device). The number of the
* lcn is returned the the character passed
*/
#define XIOGETLCN _IOR(t, 6, u_char)
/* free an lcn specified by the u_char parameter. This should be called for all
* lcn's obtained with XIOGETLCN before the channel is closed.
*/
#define XIOFREELCN _IOW(t, 11, u_char)
/* clear any data associated with a channel. The lcn is passed. Note that
* this does not clear the circut. It only flushes queued data stored in the
* driver
*/
#define XIOCLRCHAN _IO(t, 7)
/* disallow incomming calls on this channel */
#define XIONORING _IO(t, 9)
/* specify a signal to be sent to the process when there is data ready to
* be read on a particular channel. The u_int specifies the signal to be
* sent.
*/
#define XIORSIG _IOW(t, 10, u_int)
/* abort all output for the given lcn. */
#define XIOABORT _IOW(t, 12, u_char)
/*
Revision history:
06-Jun-1988 Brad Initial implementation
*/