/usr/include/vtcore_ioctl.h is in libvpb-dev 4.2.59-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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vtcore_ioctl.h
Core Kernel module IOCTL header file
Author: Ben Kramer
Date: 24 October 2005
\*---------------------------------------------------------------------------*/
#ifndef __VTCOREIOCTL__
#define __VTCOREIOCTL__
/* Channel Interface types */
#define VT_UNKNOWN 0
#define VT_FXO_AN 1
#define VT_FXS_AN 2
typedef struct {
unsigned char board;
unsigned char channel;
unsigned int length;
void *data;
} VT_DATA;
typedef struct {
unsigned char reg;
unsigned char value;
} VT_REG_RW;
#define VT_IOC_MAGIC 'v'
//#define VT_IOC_REGWRITE _IO(VT_IOC_MAGIC, 1)
//#define VT_IOC_REGREAD _IO(VT_IOC_MAGIC, 2)
#define VT_IOC_CHANREADAUDIO _IO(VT_IOC_MAGIC, 3)
#define VT_IOC_CHANWRITEAUDIO _IO(VT_IOC_MAGIC, 4)
#define VT_IOC_HOOK _IO(VT_IOC_MAGIC, 5)
#define VT_IOC_READ_MSGQ _IO(VT_IOC_MAGIC, 6)
#define VT_IOC_CHANCOUNT _IO(VT_IOC_MAGIC, 7)
//#define VT_IOC_LINEVOLT _IO(VT_IOC_MAGIC, 8) // unused
//#define VT_IOC_LINEPOL _IO(VT_IOC_MAGIC, 9)
//#define VT_IOC_LINESTATE _IO(VT_IOC_MAGIC, 10)
#define VT_IOC_LISTEN _IO(VT_IOC_MAGIC, 11)
#define VT_IOC_UNLISTEN _IO(VT_IOC_MAGIC, 12)
/* Use 2 Listens instead
#define VT_IOC_BRIDGE _IO(VT_IOC_MAGIC, 13)
#define VT_IOC_UNBRIDGE _IO(VT_IOC_MAGIC, 14)
*/
#define VT_IOC_CHAN_READ_AUDIO_FIFO_HOW_FULL _IO(VT_IOC_MAGIC, 15)
#define VT_IOC_CHAN_WRITE_AUDIO_FIFO_HOW_EMPTY _IO(VT_IOC_MAGIC, 16)
#define VT_IOC_BOARD_COUNT _IO(VT_IOC_MAGIC, 17)
#define VT_IOC_BOARD_PORT_COUNT _IO(VT_IOC_MAGIC, 18)
#define VT_IOC_BOARD_PORT_TYPE _IO(VT_IOC_MAGIC, 19)
#define VT_IOC_CHAN_BALANCE_SET _IO(VT_IOC_MAGIC, 20)
#define VT_IOC_SET_RECGAIN _IO(VT_IOC_MAGIC, 21)
#define VT_IOC_SET_PLAYGAIN _IO(VT_IOC_MAGIC, 22)
#define VT_IOC_FXS_RING _IO(VT_IOC_MAGIC, 23)
//#define VT_IOC_FXS_RING_CADON _IO(VT_IOC_MAGIC, 24) // unused
//#define VT_IOC_FXS_RING_CADOFF _IO(VT_IOC_MAGIC, 25)
//#define VT_IOC_FXS_RING_CADON2 _IO(VT_IOC_MAGIC, 26)
//#define VT_IOC_FXS_RING_CADOFF2 _IO(VT_IOC_MAGIC, 27)
#define VT_IOC_SET_LOGGING _IO(VT_IOC_MAGIC, 28)
#define VT_IOC_ECHOCAN_ON _IO(VT_IOC_MAGIC, 29)
#define VT_IOC_ECHOCAN_OFF _IO(VT_IOC_MAGIC, 30)
//#define VT_IOC_PORT_RST _IO(VT_IOC_MAGIC, 50)
#define VT_IOC_SETCOUNTRY _IOW(VT_IOC_MAGIC, 61, VT_DATA)
#define VT_IOC_SETFLASH _IOW(VT_IOC_MAGIC, 62, VT_DATA)
#define VT_IOC_SETHOOKTHRESH _IOW(VT_IOC_MAGIC, 63, VT_DATA)
#define VT_IOC_SETLOOPDROP _IOW(VT_IOC_MAGIC, 64, VT_DATA)
#define VT_IOC_SETVDAAIMPEDANCE _IOW(VT_IOC_MAGIC, 65, VT_DATA)
#define VT_IOC_TAPLISTEN _IOW(VT_IOC_MAGIC, 70, VT_DATA)
#define VT_IOC_DRIVER_VERSION _IO(VT_IOC_MAGIC, 99)
/* OpenPCI programming */
#define VT_IOC_PPWDATA _IO(VT_IOC_MAGIC, 100)
#define VT_IOC_PPRSTATUS _IO(VT_IOC_MAGIC, 101)
#define VT_IOC_PPRELEASE _IO(VT_IOC_MAGIC, 102)
//#define VT_IOC_PPEXCL _IO(VT_IOC_MAGIC, 103)
#define VT_IOC_PPCLAIM _IO(VT_IOC_MAGIC, 104)
#define VT_IOC_OPCI_ARM_RST _IO(VT_IOC_MAGIC, 105)
#define VT_IOC_ARMR _IO(VT_IOC_MAGIC, 106)
#define VT_IOC_ARMW _IO(VT_IOC_MAGIC, 107)
//#define VT_IOC_OPCI_ARM_RESET _IO(VT_IOC_MAGIC, 108)
// Replacements for ARMW, PPWDATA and PPSTATUS
#define VT_IOC_ARMWR _IO(VT_IOC_MAGIC, 109)
#define VT_IOC_JTAGWRITE _IO(VT_IOC_MAGIC, 110)
#define VT_IOC_JTAGSTATUS _IO(VT_IOC_MAGIC, 111)
#endif
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