#include <stdio.h>
#include <string.h>
#include <sys/neutrino.h>
#include <hw/inout.h>
#include <errno.h>
#include "subbusd_int.h"
#include "nortlib.h"
#include "sc104.h"
#include "nl_assert.h"

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Functions
int	read_ack (unsigned short addr, unsigned short *data)
unsigned short	sbrb (unsigned short addr)
int	write_ack (unsigned short addr, unsigned short data)
int	set_cmdenbl (int val)
int	set_cmdstrobe (int value)
unsigned short	read_switches (void)
int	set_failure (unsigned short value)
unsigned short	read_failure (void)
int	tick_sic (void)
int	disarm_sic (void)
static void	ErrorReply (int rcvid, int rv)
void	incoming_sbreq (int rcvid, subbusd_req_t *req)
void	init_subbus (dispatch_t *dpp)
void	shutdown_subbus (void)
Variables
unsigned short	subbus_version = SUBBUS_VERSION
unsigned short	subbus_features = SUBBUS_FEATURES
unsigned short	subbus_subfunction = LIBRARY_SUB

Function Documentation

int disarm_sic ( void )

If system controller is associated with a watchdog timer that can reboot the system, this command disables that timer.

Definition at line 117 of file sc104.c.

References SBC_DISARM, SBRT_NONE, SC_DISARM, and send_to_subbusd().

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static void ErrorReply	(	int	rcvid,
		int	rv
	)		`[static]`

Definition at line 122 of file sc104.c.

References nl_assert, subbusd_rep_hdr_t::ret_type, SBRT_NONE, and subbusd_rep_hdr_t::status.

Referenced by incoming_sbreq().

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void incoming_sbreq	(	int	rcvid,
		subbusd_req_t *	req
	)

The basic sanity of the incoming message has been checked by subbus_io_msg before it gets here, so we can at least assume that the message was big enough to include the specified message type, and that the message type is defined.

Definition at line 137 of file sc104.c.

References subbusd_req_data0::address, subbusd_rep_t::capabilities, subbusd_req_hdr_t::command, subbusd_req_t::d0, subbusd_req_t::d1, subbusd_req_data0::data, subbusd_rep_t::data, subbusd_req_data1::data, subbusd_req_t::data, disarm_sic(), ErrorReply(), subbusd_cap_t::features, subbusd_rep_t::hdr, int_attach(), int_detach(), LIBRARY_SUB, subbusd_cap_t::name, nl_error, read_ack(), read_failure(), read_switches(), subbusd_rep_hdr_t::ret_type, sb_cache_read(), sb_cache_write(), SBC_DISARM, SBC_GETCAPS, SBC_INTATT, SBC_INTDET, SBC_QUIT, SBC_READACK, SBC_READCACHE, SBC_READFAIL, SBC_READSW, SBC_SETCMDENBL, SBC_SETCMDSTRB, SBC_SETFAIL, SBC_TICK, SBC_WRITEACK, SBC_WRITECACHE, subbusd_req_t::sbhdr, SBRT_CAP, SBRT_NONE, SBRT_US, SBS_ACK, SBS_NOACK, SBS_OK, set_cmdenbl(), set_cmdstrobe(), set_failure(), subbusd_rep_hdr_t::status, SUBBUS_FEATURES, SUBBUS_NAME_MAX, subbusd_cap_t::subfunc, tick_sic(), subbusd_rep_t::value, and write_ack().

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void init_subbus ( dispatch_t * dpp )

Definition at line 238 of file sc104.c.

References expint_init(), nl_error, SC_SB_CONFIG, SC_SB_HIGHCTRL, SC_SB_LOWCTRL, SC_SB_RESET, and service_expint().

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int read_ack	(	unsigned short	addr,
		unsigned short *	data
	)

Returns:: non-zero if hardware read acknowledge was observed.

Definition at line 19 of file sc104.c.

References subbusd_rep_t::data, subbusd_req_data1::data, nl_error, SBC_READACK, SBRT_US, SBS_ACK, SBS_NOACK, SC_SB_LOWA, SC_SB_LOWB, SC_SB_LOWC, send_to_subbusd(), subbusd_rep_t::value, and WAIT_COUNT.

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unsigned short read_failure ( void )

The value reported represents the current state of the indicator lights. As noted in read_switches(), the least significant bit is associated the the main "fail light" located in the cockpit. This light can be lit via set_failure() or the system controller's two minute timeout circuit. In either case, read_failure() will report the actual state of the light.

Returns:: The binary-encoded value of the indicator light settings.

Definition at line 104 of file sc104.c.

References read_special(), SBC_READFAIL, and SC_LAMP.

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unsigned short read_switches ( void )

Reads the positions of a dedicated set of system mode switches, usually located on a control panel on the instrument.

Returns:: The binary-encoded switch positions, or zero on error.

Definition at line 85 of file sc104.c.

References read_special(), SBC_READSW, and SC_SWITCHES.

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unsigned short sbrb ( unsigned short addr )

Definition at line 32 of file sc104.c.

References read_ack(), and read_subbus().

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int set_cmdenbl ( int val )

don't need to serialize access to cmdenbl, since it's I/O port mapped.

Definition at line 56 of file sc104.c.

References SBC_SETCMDENBL, SC_CMDENBL, and send_CSF().

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int set_cmdstrobe ( int value )

Function to set cmdstrobe value.

Parameters:

val	non-zero value asserts cmdstrobe.

Returns:: non-zero no success, zero if operation is not supported.

Function did not exist at all before version 3.10, so programs intending to use this function should verify that the resident library version is at least 3.10. The feature word can also be checked for support, and that is consistent back to previous versions.

Definition at line 72 of file sc104.c.

References SBC_SETCMDSTRB, SC_SB_LOWC, SC_SB_LOWCTRL, and send_CSF().

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int set_failure ( unsigned short value )

Sets the value of a dedicated set of indicator lights, usually located on a control panel on the instrument and/or in the cockpit of the aircraft. For each bit of the input argument, a non-zero value indicates the associated light should be on.

By convention, the least significant bit is associated with the main "fail light" located in the cockpit on aircraft instruments, indicating that the instrument is not acquiring data.. This light (and the associated bit value on readback) will also be set by the system controller's two minute timeout circuit.

See also:: read_failure()

Parameters:

value Binary-encoded light settings.

Definition at line 93 of file sc104.c.

References SBC_SETFAIL, SC_LAMP, and send_CSF().

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void shutdown_subbus ( void )

Definition at line 260 of file sc104.c.

References nl_error.

int tick_sic ( void )

Historically, tick_sic() has been associated with two timers. The first is a 2-second timeout that can reboot the system. The second is a 2-minute timeout that lights the main fail light indicating that the instrument is not acquiring data.

It is unclear whether the new syscon_usb will support the reboot timer or rely on a motherboard-specific watchdog timer.

Definition at line 112 of file sc104.c.

References SBC_TICK, SBRT_NONE, SC_TICK, and send_to_subbusd().

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int write_ack	(	unsigned short	addr,
		unsigned short	data
	)

Returns:: non-zero value if the hardware acknowledge is observed. Historically, the value recorded the number of iterations in the software loop waiting for the microsecond timeout.

Definition at line 42 of file sc104.c.

References subbusd_req_data0::address, subbusd_req_data0::data, nl_error, SBC_WRITEACK, SBRT_NONE, SBS_ACK, SBS_NOACK, SC_SB_LOWA, SC_SB_LOWB, SC_SB_LOWC, send_to_subbusd(), and WAIT_COUNT.

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Variable Documentation

unsigned short subbus_features = SUBBUS_FEATURES

Definition at line 15 of file sc104.c.

unsigned short subbus_subfunction = LIBRARY_SUB

Definition at line 16 of file sc104.c.

unsigned short subbus_version = SUBBUS_VERSION

Definition at line 14 of file sc104.c.

Functions

Variables

Function Documentation

Variable Documentation