Functions
int	edt_parse_unit_channel (const char str, char dev, const char default_dev, int channel)
	Parse an EDT device name string. Fills in the name of the device, with the default_device if specified, or a default determined by the package, and returns a unit number. Designed to facilitate a flexible device/unit command line argument scheme for application programs. Most EDT example/utility programs use this subroutine to allow users to specify either a unit number alone or a device/unit number concatenation. More...

void	edt_reset_counts (EdtDev edt_p)
	Reset timeout and overflow counters in the driver. More...

int	edt_device_unit (EdtDev edt_p)
	Get the 'unit' number of the specified device. More...

int	edt_device_channel (EdtDev edt_p)
	Get the 'channel' number of the specified device. More...

enum EDT_PCI_PID	edt_device_id (EdtDev edt_p)
	Get the PCI device ID (PID) of the EDT device. More...

const char *	edt_idstr (enum EDT_PCI_PID id)
	Get a descriptive string of a given board ID. More...

int	edt_parse_unit (const char str, char dev, const char *default_dev)
	Parse an EDT device name string. Same as edt_parse_unit_channel() but without the channel number. More...

int	edt_find_xpn (const char part_number, char fpga)
	Read the default part number->fpga cross-reference file edt_parts.xpn in the current directory, and provides the FPGA if a match is found. More...

int	edt_get_xref_info (const char path, const char pn, char fpga, char sn, char mac_type, char mac_offset, char mac_count, char desc, char rsvd1, char rsvd2)
	Read a part number->fpga cross-reference file and provides the FPGA and base serial number if a match is found. More...

unsigned int	edt_errno (void)
	Get an operating system dependent error number. More...

const char *	edt_home_dir (EdtDev edt_p)
	Get base installation directory of PCD or PDV package. More...

EDT_CHECK_RETURN int	edt_system (const char *cmdstr)
	Performs a UNIX-like `system()` call which passes the argument string to a shell or command interpreter, then returns the exit status so that errors can be detected. On Windows `spawnv()` will be used. More...

int	edt_set_bitpath (EdtDev edt_p, const char *bitpath)
	Set `bitpath` as the currently loaded "user interface" FPGA firmware ("bitfile") in the driver. More...

int	edt_get_bitpath (EdtDev edt_p, char *bitpath, int size)
	Get file path from the driver of the currently loaded interface bitfile. More...

int	edt_get_bitname (EdtDev edt_p, char *bitfile, int size)
	Same as edt_get_bitpath() but returns the file name without the directory. More...

int	edt_get_driver_version (EdtDev edt_p, char *version_str, size_t size)

int	edt_get_driver_buildid (EdtDev edt_p, char *build_str, size_t size)
	Get the full build ID of the EDT driver. The build ID string is the same format as that returned by edt_get_library_buildid(). More...

int	edt_get_library_version (char *version_str, size_t size)
	Get the version string of the EDT library. Example: `"1.2.3-rc4"` More...

unsigned int	edt_get_version_number (void)
	Get the EDT library version as a packed number. Example v5.6.1 would be represented as `50601`. More...

int	edt_get_library_buildid (char *build_str, size_t size)
	Get the build ID of the EDT library. Example: `"20210214124523.asdf1234 64 bit"` More...

int	edt_check_version (EdtDev edt_p)
	Ensure the EDT library and the kernel driver are the same version. More...

uint32_t	edt_get_dma_info (EdtDev edt_p, edt_dma_info_t *dmainfo)
	Gets information about active DMA. More...

Detailed Description

Utility functions.

Function Documentation

◆ edt_parse_unit_channel()

int edt_parse_unit_channel	(	const char *	str,
		char *	dev,
		const char *	default_dev,
		int *	channel
	)

Parse an EDT device name string. Fills in the name of the device, with the default_device if specified, or a default determined by the package, and returns a unit number. Designed to facilitate a flexible device/unit command line argument scheme for application programs. Most EDT example/utility programs use this subroutine to allow users to specify either a unit number alone or a device/unit number concatenation.

Parameters

[in]	str	Device name string from command line. Should be either a unit number ("0") or device/unit concatenation ("pcd0," "pcd1," etc.).
[out]	dev	Array to hold the device name string; filled in by ths routine.
[in]	default_dev	Device name to use if none is given in the `str` argument. If NULL, EDT_INTERFACE will be used.
[out]	channel	The channel number parsed from `str`. If this is NULL or parsed channel number is -1, this is ignored and unchanged.

Returns: Unit number, or -1 on error. The first device is unit 0.

◆ edt_reset_counts()

void edt_reset_counts ( EdtDev edt_p )

Reset timeout and overflow counters in the driver.

Parameters

edt_p The open EDT device handle.

◆ edt_device_unit()

int edt_device_unit ( EdtDev edt_p )

Get the 'unit' number of the specified device.

Parameters

edt_p EDT device handle to inspect.

Returns: Unit number (>=0) on success, -1 on failure.

◆ edt_device_channel()

int edt_device_channel ( EdtDev edt_p )

Get the 'channel' number of the specified device.

Parameters

edt_p The open EDT device handle.

Returns: Channel number (>=0) on success, -1 on failure.

◆ edt_device_id()

enum EDT_PCI_PID edt_device_id ( EdtDev edt_p )

Get the PCI device ID (PID) of the EDT device.

Parameters

edt_p The open EDT device handle.

Returns: PCI PID number.

◆ edt_idstr()

const char * edt_idstr ( enum EDT_PCI_PID id )

Get a descriptive string of a given board ID.

Parameters

id	PCI device id. See edt_device_id().

Returns: A descriptive string, such as "PCIe8 A5 10G", "Visionlink F4", or "unknown".

◆ edt_parse_unit()

int edt_parse_unit	(	const char *	str,
		char *	dev,
		const char *	default_dev
	)

Parse an EDT device name string. Same as edt_parse_unit_channel() but without the channel number.

Parameters

[in]	str	Device name string from command line. Should be either a unit number ("0") or device/unit concatenation ("pcd0," "pcd1," etc.).
[out]	dev	Array to hold the device name string; filled in by ths routine.
[in]	default_dev	Device name to use if none is given in the `str` argument. If NULL, EDT_INTERFACE will be used.

Returns: Unit number, or -1 on error. The first device is unit 0.

◆ edt_find_xpn()

int edt_find_xpn	(	const char *	part_number,
		char *	fpga
	)

Read the default part number->fpga cross-reference file edt_parts.xpn in the current directory, and provides the FPGA if a match is found.

Parameters

[in]	part_number	EDT part number to return information about.
[out]	fpga	A character array into which the FPGA type will be stored. For example 'xc2s100e' will be returned for the part_number '01901933'). An array of 128 bytes will be more than enough for the foreseeable future.

Returns: 1 if found 8 or 10 digit match, 0 if not.

Equivalent to

edt_get_xref_info(path: "./edt_parts.xpn",
                  pn: part_number,
                  fpga: fpga,
                  sn: NULL,
                  mac_type: NULL,
                  mac_offset: NULL,
                  mac_count: NULL,
                  desc: NULL,
                  rsvd1: NULL,
                  rsvd2: NULL)

See edt_get_xref_info() for complete description.

◆ edt_get_xref_info()

int edt_get_xref_info	(	const char *	path,
		const char *	pn,
		char *	fpga,
		char *	sn,
		char *	mac_type,
		char *	mac_offset,
		char *	mac_count,
		char *	desc,
		char *	rsvd1,
		char *	rsvd2
	)

Read a part number->fpga cross-reference file and provides the FPGA and base serial number if a match is found.

Parameters

[in]	path	Path of the xref FPGA file (typ. "edt_parts.xpn").
[in]	pn	EDT part number to search for. Either 8 to 10 characters, meaning either with or without the last 2 characters, which is the revision number. Example: `"01901933"`.
[out]	fpga	If a match is found, the FPGA part number will be returned here. Should be at least 64 bytes. If NULL, this parameter will be ignored.
[out]	sn	The base serial number, if found. Should be at least 64 bytes. If NULL, this parameter will be ignored.
[out]	mac_type	The MAC address board type, if found. Should be at least 8 bytes. If NULL, this parameter will be ignored.
[out]	mac_offset	The MAC address offset found. Should be at least 8 bytes. If NULL this parameter will be ignored.
[out]	mac_count	The MAC addresses for this board, if found. Should be at least 8 bytes. If NULL this parameter will be ignored.
[out]	rsvd1	Reserved. Always pass NULL.
[out]	rsvd2	Reserved. Always pass NULL.

Returns: Number of parameters successfully assigned, or 0 if none or error.

Opens the file specified in the path argument (e.g. "edt_parts.xpn") and compares the entries with the provided part number. If a match is found, it will be copied to the fpga argument. Will also copy a serial number if found. Format of the file is ASCII text, one line per part number, as follows:

<part_number> <fpga> [serial] <description>

(serial is optional and not present in earlier files)

Anything after the third item is ignored, and can be blank but should typically be the description (name of the device). Since files originally had only two fields and no serial number, an attempt is made to determine if the 3rd field looks like a serial number and copies that if so, otherwise sets the first character to NULL.

The last 2 digits of 10 digit pn are the revision number. If a match with a 10-digit number is found, returns with the info from that one. If no 10-digit match is found but an 8-digit is found, returns with that info. That way we can have some numbers return a match regardless of rev, and others that cover a specific rev that takes precedence.

◆ edt_errno()

unsigned int edt_errno ( void )

Get an operating system dependent error number.

errno on UNIX, GetLastError() on Windows.

Returns: OS-dependent error number.

Example:

if ((edt_p = edt_open("pcd", 0)) == NULL)
{
    edt_msg_perror(EDTLIB_MSG_WARNING, "edt_open failed");
    exit(edt_errno());
}

◆ edt_home_dir()

const char * edt_home_dir ( EdtDev edt_p )

Get base installation directory of PCD or PDV package.

Home directory is based on EDT environment variable for the driver type, if set. Driver type depends on the version of EDT package / SDK in use. Drivertype / environment variable associations follow:

"pcd": $EDT_PCD_DIR "pdv": $EDT_PDV_DIR

By default, the installation script installs packages in /opt/EDT<type> (Linux) or C:\EDT\<type> (Windows), so for example with a PCD package and default install directory, this subroutine would return "/opt/EDTpcd" or "C:\EDT\pcd".

Parameters

edt_p pointer to edt device structure returned by edt_open or edt_open_channel

Returns: value of the appropriate $XXXHOME environment variable, or CWD (".") if not set.

◆ edt_system()

EDT_CHECK_RETURN int edt_system ( const char * cmdstr )

Performs a UNIX-like system() call which passes the argument string to a shell or command interpreter, then returns the exit status so that errors can be detected. On Windows spawnv() will be used.

Parameters

cmdstr The command string to execute.

Returns: The value returned by the underlying system call. 0 should indicate the command completed successfully.

◆ edt_set_bitpath()

int edt_set_bitpath	(	EdtDev	edt_p,
		const char *	bitpath
	)

Set bitpath as the currently loaded "user interface" FPGA firmware ("bitfile") in the driver.

For use by edt_bitload() and the bitload application.

Parameters

edt_p	The open EDT device handle.
bitpath	Firmware (bitfile) file name. Should be no more than 128 bytes.

Returns: 0 on success, -1 on failure.

See also: edt_get_bitpath(), edt_set_mezz_bitpath()

◆ edt_get_bitpath()

int edt_get_bitpath	(	EdtDev	edt_p,
		char *	bitpath,
		int	size
	)

Get file path from the driver of the currently loaded interface bitfile.

edt_bitload() sets this when an interface bitfile is successfully loaded.

Parameters

	edt_p	The open EDT device handle.
[out]	bitpath	The file path read from the driver will be returned here. Should be at least 128 bytes (edt_bitpath).
	size	Size of `bitpath`.

Returns: 0 on success, -1 on failure.

See also: edt_set_bitpath()

◆ edt_get_bitname()

int edt_get_bitname	(	EdtDev	edt_p,
		char *	bitfile,
		int	size
	)

Same as edt_get_bitpath() but returns the file name without the directory.

Parameters

	edt_p	The open EDT device handle.
[out]	bitfile	The file name read from the driver will be returned here. Should be at least 128 bytes.
	size	Size of `bitfile`.

Returns: 0 on success, -1 on failure.

See also: edt_set_bitpath()

◆ edt_get_driver_version()

int edt_get_driver_version	(	EdtDev	edt_p,
		char *	version_str,
		size_t	size
	)

Parameters

	Get	the version of the EDT driver. The version string is the same format as that returned by edt_get_library_version().
	edt_p	The open EDT device handle.
[out]	version_str	Driver's version string will be returned here. Should be at least 64 bytes (edt_version_string).
	size	Size, in bytes, of `version_str` buffer.

Returns: 0 on success.

See also: edt_get_library_version()

◆ edt_get_driver_buildid()

int edt_get_driver_buildid	(	EdtDev	edt_p,
		char *	build_str,
		size_t	size
	)

Get the full build ID of the EDT driver. The build ID string is the same format as that returned by edt_get_library_buildid().

Parameters

	edt_p	The open EDT device handle.
[out]	build_str	Driver's build info string will be returned here. Should be at least 128 bytes.
	size	Size, in bytes, of `build_str` buffer.

Returns: 0 on success.

See also: edt_get_library_buildid()

◆ edt_get_library_version()

int edt_get_library_version	(	char *	version_str,
		size_t	size
	)

Get the version string of the EDT library. Example: "1.2.3-rc4"

Parameters

[out]	version_str	Version string from libedt_get_version_str() will be copied into this buffer.
	size	Size, in bytes, of `version_str` buffer.

Returns: 0 on success.

See also: edt_get_driver_version()

◆ edt_get_version_number()

unsigned int edt_get_version_number ( void )

Get the EDT library version as a packed number. Example v5.6.1 would be represented as 50601.

Returns: Packed library version number.

◆ edt_get_library_buildid()

int edt_get_library_buildid	(	char *	build_str,
		size_t	size
	)

Get the build ID of the EDT library. Example: "20210214124523.asdf1234 64 bit"

Parameters

[out]	build_str	Build string from data in libedt_get_version() will be saved into this buffer.
	size	Size, in bytes, of `build_str` buffer.

See also: edt_get_driver_buildid()

◆ edt_check_version()

int edt_check_version ( EdtDev edt_p )

Ensure the EDT library and the kernel driver are the same version.

While uncommon, it is possible for package updates to fail, causing an older EDT driver to be left in the system. User applications may wish to run this sanity check early, to ensure the library and driver match before they encounter errors due to an incompatibility.

Parameters

edt_p The open EDT device handle.

Returns: True (!= 0) if the versions match. False (0) if they differ.

◆ edt_get_dma_info()

uint32_t edt_get_dma_info	(	EdtDev	edt_p,
		edt_dma_info_t *	dmainfo
	)

Gets information about active DMA.

Determine whether this or another open process has enabled DMA or image acquisition on any channel of a specific board (unit).

Parameters

	edt_p	The open EDT device handle.
[out]	dmainfo	DMA information result.

Returns: The value of used_dma, alloc_dma and active_dma masks OR'd together.

Example:

// This code checks whether this or some other process has done or is
// currently doing DMA on a given unit / channel, and prints out a warning
// if there is a possibility of a conflict based on the results.
 
edt_dma_info_t tmpinfo ;
EdtDev edt_p = edt_open_channel(EDT_INTERFACE, unit, channel);
uint32_t tmpmask = edt_get_dma_info(edt_p, &tmpinfo);
 
if (tmpinfo.active_dma & (1 << channel))
{
    printf("Warning: DMA is currently active on unit %d ch. %d.\n", unit, channel);
    printf("It is not safe to start another DMA on this unit/channel at this time.\n");
}
if (tmpinfo.used_dma & 1 << channel))
{
    printf("Warning: this or another process has already opened and done DMA "
           "on unit %d channel %d.\n", unit, channel);
    printf("It may not be safe to start DMA on this unit/channel outside the "
           "currently opened process.\n");
}

Functions

Detailed Description

Function Documentation

◆ edt_parse_unit_channel()

◆ edt_reset_counts()

◆ edt_device_unit()

◆ edt_device_channel()

◆ edt_device_id()

◆ edt_idstr()

◆ edt_parse_unit()

◆ edt_find_xpn()

◆ edt_get_xref_info()

◆ edt_errno()

◆ edt_home_dir()

◆ edt_system()

◆ edt_set_bitpath()

◆ edt_get_bitpath()

◆ edt_get_bitname()

◆ edt_get_driver_version()

◆ edt_get_driver_buildid()

◆ edt_get_library_version()

◆ edt_get_version_number()

◆ edt_get_library_buildid()

◆ edt_check_version()

◆ edt_get_dma_info()