Holds support for accessing JTAG-specific mechanisms from TCl scripts. More...

Include dependency graph for jtag/tcl.c:

Macros
#define	NTAP_OPT_BYPASS 7

#define	NTAP_OPT_DISABLED 4

#define	NTAP_OPT_ENABLED 3

#define	NTAP_OPT_EXPECTED_ID 5

#define	NTAP_OPT_IRCAPTURE 2

#define	NTAP_OPT_IRLEN 0

#define	NTAP_OPT_IRMASK 1

#define	NTAP_OPT_VERSION 6

Enumerations
enum	jtag_tap_cfg_param { JCFG_EVENT , JCFG_IDCODE }

Functions
	COMMAND_HANDLER (handle_irscan_command)

	COMMAND_HANDLER (handle_jtag_flush_queue_sleep)

	COMMAND_HANDLER (handle_jtag_init_command)

	COMMAND_HANDLER (handle_jtag_ntrst_assert_width_command)

	COMMAND_HANDLER (handle_jtag_ntrst_delay_command)

	COMMAND_HANDLER (handle_jtag_rclk_command)

	COMMAND_HANDLER (handle_runtest_command)

	COMMAND_HANDLER (handle_scan_chain_command)

	COMMAND_HANDLER (handle_tms_sequence_command)

	COMMAND_HANDLER (handle_verify_ircapture_command)

	COMMAND_HANDLER (handle_verify_jtag_command)

	COMMAND_HANDLER (handle_wait_srst_deassert)

static int	is_bad_irval (int ir_length, jim_wide w)

static int	jim_command_drscan (Jim_Interp interp, int argc, Jim_Obj const *args)

static int	jim_command_flush_count (Jim_Interp interp, int argc, Jim_Obj const *args)

static int	jim_command_pathmove (Jim_Interp interp, int argc, Jim_Obj const *args)

static int	jim_jtag_arp_init (Jim_Interp interp, int argc, Jim_Obj const *argv)

static int	jim_jtag_arp_init_reset (Jim_Interp interp, int argc, Jim_Obj const *argv)

int	jim_jtag_configure (Jim_Interp interp, int argc, Jim_Obj const *argv)

static int	jim_jtag_names (Jim_Interp interp, int argc, Jim_Obj const *argv)

int	jim_jtag_newtap (Jim_Interp interp, int argc, Jim_Obj const *argv)

int	jim_jtag_tap_enabler (Jim_Interp interp, int argc, Jim_Obj const *argv)

static int	jim_newtap_cmd (struct jim_getopt_info *goi)

static int	jim_newtap_expected_id (struct jim_nvp n, struct jim_getopt_info goi, struct jtag_tap *tap)

static int	jim_newtap_ir_param (struct jim_nvp n, struct jim_getopt_info goi, struct jtag_tap *tap)

void	jtag_notify_event (enum jtag_event event)
	Report Tcl event to all TAPs. More...

int	jtag_register_commands (struct command_context *cmd_ctx)

struct jtag_tap *	jtag_tap_by_jim_obj (Jim_Interp interp, Jim_Obj o)

static int	jtag_tap_configure_cmd (struct jim_getopt_info goi, struct jtag_tap tap)

static int	jtag_tap_configure_event (struct jim_getopt_info goi, struct jtag_tap tap)

static bool	jtag_tap_disable (struct jtag_tap *t)

static bool	jtag_tap_enable (struct jtag_tap *t)

static void	jtag_tap_handle_event (struct jtag_tap *tap, enum jtag_event e)

static bool	scan_is_safe (tap_state_t state)

Variables
static const struct command_registration	jtag_command_handlers []

static const struct command_registration	jtag_command_handlers_to_move []

static const struct command_registration	jtag_subcommand_handlers []

static struct jim_nvp	nvp_config_opts []

static const struct jim_nvp	nvp_jtag_tap_event []

Detailed Description

Holds support for accessing JTAG-specific mechanisms from TCl scripts.

Definition in file jtag/tcl.c.

Macro Definition Documentation

◆ NTAP_OPT_BYPASS

#define NTAP_OPT_BYPASS 7

Definition at line 462 of file jtag/tcl.c.

◆ NTAP_OPT_DISABLED

#define NTAP_OPT_DISABLED 4

Definition at line 459 of file jtag/tcl.c.

◆ NTAP_OPT_ENABLED

#define NTAP_OPT_ENABLED 3

Definition at line 458 of file jtag/tcl.c.

◆ NTAP_OPT_EXPECTED_ID

#define NTAP_OPT_EXPECTED_ID 5

Definition at line 460 of file jtag/tcl.c.

◆ NTAP_OPT_IRCAPTURE

#define NTAP_OPT_IRCAPTURE 2

Definition at line 457 of file jtag/tcl.c.

◆ NTAP_OPT_IRLEN

#define NTAP_OPT_IRLEN 0

Definition at line 455 of file jtag/tcl.c.

◆ NTAP_OPT_IRMASK

#define NTAP_OPT_IRMASK 1

Definition at line 456 of file jtag/tcl.c.

◆ NTAP_OPT_VERSION

#define NTAP_OPT_VERSION 6

Definition at line 461 of file jtag/tcl.c.

Enumeration Type Documentation

◆ jtag_tap_cfg_param

enum jtag_tap_cfg_param

Enumerator
JCFG_EVENT
JCFG_IDCODE

Definition at line 298 of file jtag/tcl.c.

Function Documentation

◆ COMMAND_HANDLER() [1/12]

COMMAND_HANDLER ( handle_irscan_command )

Definition at line 1077 of file jtag/tcl.c.

References buf_set_u64(), CMD, CMD_ARGC, CMD_ARGV, command_print(), DIV_ROUND_UP, ERROR_COMMAND_SYNTAX_ERROR, ERROR_FAIL, ERROR_OK, scan_field::in_value, jtag_tap::ir_length, jtag_add_ir_scan(), jtag_execute_queue(), jtag_tap_by_string(), LOG_ERROR, LOG_WARNING, NULL, scan_field::num_bits, scan_field::out_value, scan_is_safe(), TAP_IDLE, TAP_INVALID, and tap_state_by_name().

◆ COMMAND_HANDLER() [2/12]

COMMAND_HANDLER ( handle_jtag_flush_queue_sleep )

Definition at line 1216 of file jtag/tcl.c.

References CMD_ARGC, CMD_ARGV, COMMAND_PARSE_NUMBER, ERROR_COMMAND_SYNTAX_ERROR, ERROR_OK, jtag_set_flush_queue_sleep(), and sleep_ms.

◆ COMMAND_HANDLER() [3/12]

COMMAND_HANDLER ( handle_jtag_init_command )

Definition at line 835 of file jtag/tcl.c.

References CMD_ARGC, CMD_CTX, ERROR_COMMAND_SYNTAX_ERROR, ERROR_OK, jtag_init(), LOG_DEBUG, and LOG_INFO.

◆ COMMAND_HANDLER() [4/12]

COMMAND_HANDLER ( handle_jtag_ntrst_assert_width_command )

Definition at line 1015 of file jtag/tcl.c.

References CMD, CMD_ARGC, CMD_ARGV, COMMAND_PARSE_NUMBER, command_print(), ERROR_COMMAND_SYNTAX_ERROR, ERROR_OK, jtag_get_ntrst_assert_width(), and jtag_set_ntrst_assert_width().

◆ COMMAND_HANDLER() [5/12]

COMMAND_HANDLER ( handle_jtag_ntrst_delay_command )

Definition at line 1001 of file jtag/tcl.c.

References CMD, CMD_ARGC, CMD_ARGV, COMMAND_PARSE_NUMBER, command_print(), ERROR_COMMAND_SYNTAX_ERROR, ERROR_OK, jtag_get_ntrst_delay(), and jtag_set_ntrst_delay().

◆ COMMAND_HANDLER() [6/12]

COMMAND_HANDLER ( handle_jtag_rclk_command )

Definition at line 1029 of file jtag/tcl.c.

References adapter_config_rclk(), adapter_get_speed_khz(), adapter_get_speed_readable(), CMD, CMD_ARGC, CMD_ARGV, COMMAND_PARSE_NUMBER, command_print(), ERROR_COMMAND_SYNTAX_ERROR, and ERROR_OK.

◆ COMMAND_HANDLER() [7/12]

COMMAND_HANDLER ( handle_runtest_command )

Definition at line 1057 of file jtag/tcl.c.

References CMD_ARGC, CMD_ARGV, COMMAND_PARSE_NUMBER, ERROR_COMMAND_SYNTAX_ERROR, jtag_add_runtest(), jtag_execute_queue(), and TAP_IDLE.

◆ COMMAND_HANDLER() [8/12]

COMMAND_HANDLER ( handle_scan_chain_command )

Definition at line 949 of file jtag/tcl.c.

References jtag_tap::abs_chain_position, buf_get_u32(), CMD, command_print(), jtag_tap::dotted_name, jtag_tap::enabled, ERROR_OK, jtag_tap::expected, jtag_tap::expected_ids, jtag_tap::expected_ids_cnt, jtag_tap::expected_mask, jtag_tap::idcode, jtag_tap::ignore_version, jtag_tap::ir_length, jtag_all_taps(), and jtag_tap::next_tap.

◆ COMMAND_HANDLER() [9/12]

COMMAND_HANDLER ( handle_tms_sequence_command )

Definition at line 1193 of file jtag/tcl.c.

References CMD, CMD_ARGC, CMD_ARGV, command_print(), ERROR_COMMAND_SYNTAX_ERROR, ERROR_OK, tap_use_new_tms_table(), and tap_uses_new_tms_table().

◆ COMMAND_HANDLER() [10/12]

COMMAND_HANDLER ( handle_verify_ircapture_command )

Definition at line 1159 of file jtag/tcl.c.

References CMD, CMD_ARGC, CMD_ARGV, COMMAND_PARSE_ENABLE, command_print(), ERROR_COMMAND_SYNTAX_ERROR, ERROR_OK, jtag_set_verify_capture_ir(), jtag_will_verify_capture_ir(), and status.

◆ COMMAND_HANDLER() [11/12]

COMMAND_HANDLER ( handle_verify_jtag_command )

Definition at line 1176 of file jtag/tcl.c.

References CMD, CMD_ARGC, CMD_ARGV, COMMAND_PARSE_ENABLE, command_print(), ERROR_COMMAND_SYNTAX_ERROR, ERROR_OK, jtag_set_verify(), jtag_will_verify(), and status.

◆ COMMAND_HANDLER() [12/12]

COMMAND_HANDLER ( handle_wait_srst_deassert )

Definition at line 1229 of file jtag/tcl.c.

References CMD_ARGC, CMD_ARGV, COMMAND_PARSE_NUMBER, ERROR_COMMAND_SYNTAX_ERROR, ERROR_FAIL, ERROR_OK, jtag_srst_asserted(), LOG_ERROR, LOG_USER, and timeval_ms().

◆ is_bad_irval()

static int is_bad_irval	(	int	ir_length,
		jim_wide	w
	)

static

Definition at line 422 of file jtag/tcl.c.

Referenced by jim_newtap_ir_param().

◆ jim_command_drscan()

static int jim_command_drscan	(	Jim_Interp *	interp,
		int	argc,
		Jim_Obj const	args
	)

static

Definition at line 75 of file jtag/tcl.c.

References bits, buf_to_hex_str(), DIV_ROUND_UP, ERROR_OK, scan_field::in_value, jtag_add_dr_scan(), jtag_execute_queue(), jtag_tap_by_jim_obj(), LOG_WARNING, NULL, scan_field::num_bits, scan_field::out_value, scan_is_safe(), str_to_buf(), TAP_IDLE, and tap_state_by_name().

◆ jim_command_flush_count()

static int jim_command_flush_count	(	Jim_Interp *	interp,
		int	argc,
		Jim_Obj const	args
	)

static

Definition at line 253 of file jtag/tcl.c.

References jtag_get_flush_queue_count().

◆ jim_command_pathmove()

static int jim_command_pathmove	(	Jim_Interp *	interp,
		int	argc,
		Jim_Obj const	args
	)

static

Definition at line 216 of file jtag/tcl.c.

References ARRAY_SIZE, ERROR_OK, jtag_add_pathmove(), jtag_add_statemove(), jtag_execute_queue(), NULL, and tap_state_by_name().

◆ jim_jtag_arp_init()

static int jim_jtag_arp_init	(	Jim_Interp *	interp,
		int	argc,
		Jim_Obj const	argv
	)

static

Definition at line 674 of file jtag/tcl.c.

References jim_getopt_info::argc, jim_getopt_info::argv, current_command_context(), ERROR_OK, command_context::interp, jim_getopt_info::interp, jim_getopt_setup(), and jtag_init_inner().

◆ jim_jtag_arp_init_reset()

static int jim_jtag_arp_init_reset	(	Jim_Interp *	interp,
		int	argc,
		Jim_Obj const	argv
	)

static

Definition at line 692 of file jtag/tcl.c.

References jim_getopt_info::argc, jim_getopt_info::argv, current_command_context(), ERROR_OK, command_context::interp, jim_getopt_info::interp, jim_getopt_setup(), jtag_init_reset(), swd_init_reset(), transport_is_jtag(), and transport_is_swd().

◆ jim_jtag_configure()

int jim_jtag_configure	(	Jim_Interp *	interp,
		int	argc,
		Jim_Obj const	argv
	)

Definition at line 791 of file jtag/tcl.c.

References jim_getopt_info::argc, jim_getopt_info::argv, jim_getopt_info::interp, jim_getopt_info::isconfigure, jim_getopt_obj(), jim_getopt_setup(), jim_to_command(), jtag_tap_by_jim_obj(), jtag_tap_configure_cmd(), command::name, and NULL.

◆ jim_jtag_names()

static int jim_jtag_names	(	Jim_Interp *	interp,
		int	argc,
		Jim_Obj const	argv
	)

static

Definition at line 815 of file jtag/tcl.c.

References jim_getopt_info::argc, jim_getopt_info::argv, jtag_tap::dotted_name, jim_getopt_info::interp, jim_getopt_setup(), jtag_all_taps(), jtag_tap::next_tap, and NULL.

◆ jim_jtag_newtap()

int jim_jtag_newtap	(	Jim_Interp *	interp,
		int	argc,
		Jim_Obj const	argv
	)

Definition at line 715 of file jtag/tcl.c.

References jim_getopt_info::argc, jim_getopt_info::argv, jim_getopt_info::interp, jim_getopt_setup(), and jim_newtap_cmd().

◆ jim_jtag_tap_enabler()

int jim_jtag_tap_enabler	(	Jim_Interp *	interp,
		int	argc,
		Jim_Obj const	argv
	)

Definition at line 753 of file jtag/tcl.c.

References jim_getopt_info::argc, jim_getopt_info::argv, jtag_tap::dotted_name, jtag_tap::enabled, jim_getopt_info::interp, jim_getopt_setup(), jim_to_command(), jtag_tap_by_jim_obj(), jtag_tap_disable(), jtag_tap_enable(), LOG_ERROR, LOG_WARNING, and command::name.

◆ jim_newtap_cmd()

static int jim_newtap_cmd ( struct jim_getopt_info * goi )

static

◆ jim_newtap_expected_id()

static int jim_newtap_expected_id	(	struct jim_nvp *	n,
		struct jim_getopt_info *	goi,
		struct jtag_tap *	tap
	)

static

Definition at line 432 of file jtag/tcl.c.

References jtag_tap::expected_ids, jtag_tap::expected_ids_cnt, jim_getopt_info::interp, jim_getopt_wide(), and jim_nvp::name.

Referenced by jim_newtap_cmd().

◆ jim_newtap_ir_param()

static int jim_newtap_ir_param	(	struct jim_nvp *	n,
		struct jim_getopt_info *	goi,
		struct jtag_tap *	tap
	)

static

Definition at line 464 of file jtag/tcl.c.

References jtag_tap::dotted_name, jim_getopt_info::interp, jtag_tap::ir_capture_mask, jtag_tap::ir_capture_value, jtag_tap::ir_length, is_bad_irval(), jim_getopt_wide(), LOG_ERROR, LOG_WARNING, jim_nvp::name, NTAP_OPT_IRCAPTURE, NTAP_OPT_IRLEN, NTAP_OPT_IRMASK, and jim_nvp::value.

Referenced by jim_newtap_cmd().

◆ jtag_notify_event()

void jtag_notify_event ( enum jtag_event event )

Report Tcl event to all TAPs.

Definition at line 940 of file jtag/tcl.c.

References jtag_all_taps(), jtag_tap_handle_event(), and jtag_tap::next_tap.

Referenced by jtag_add_reset(), jtag_add_tlr(), jtag_init_inner(), and legacy_jtag_add_reset().

◆ jtag_register_commands()

int jtag_register_commands ( struct command_context * cmd_ctx )

Definition at line 1369 of file jtag/tcl.c.

References jtag_command_handlers, NULL, and register_commands().

Referenced by jtag_select().

◆ jtag_tap_by_jim_obj()

struct jtag_tap* jtag_tap_by_jim_obj	(	Jim_Interp *	interp,
		Jim_Obj *	o
	)

Definition at line 51 of file jtag/tcl.c.

References jtag_tap_by_string(), and NULL.

Referenced by dap_configure(), jim_command_drscan(), jim_jtag_configure(), jim_jtag_tap_enabler(), and target_configure().

◆ jtag_tap_configure_cmd()

static int jtag_tap_configure_cmd	(	struct jim_getopt_info *	goi,
		struct jtag_tap *	tap
	)

static

Definition at line 379 of file jtag/tcl.c.

References jim_getopt_info::argc, jim_getopt_info::argv, jtag_tap::idcode, jim_getopt_info::interp, jim_getopt_info::isconfigure, JCFG_EVENT, JCFG_IDCODE, jim_getopt_nvp(), jim_getopt_nvp_unknown(), jtag_tap_configure_event(), jim_nvp::name, nvp_config_opts, and jim_nvp::value.

Referenced by jim_jtag_configure().

◆ jtag_tap_configure_event()

static int jtag_tap_configure_event	(	struct jim_getopt_info *	goi,
		struct jtag_tap *	tap
	)

static

Definition at line 310 of file jtag/tcl.c.

References jim_getopt_info::argc, jim_getopt_info::argv, jtag_tap_event_action::body, jtag_tap_event_action::event, jtag_tap::event_action, jim_getopt_info::interp, jtag_tap_event_action::interp, jim_getopt_info::isconfigure, jim_getopt_nvp(), jim_getopt_nvp_unknown(), jim_getopt_obj(), jtag_tap_event_action::next, nvp_jtag_tap_event, and jim_nvp::value.

Referenced by jtag_tap_configure_cmd().

◆ jtag_tap_disable()

static bool jtag_tap_disable ( struct jtag_tap * t )

static

Definition at line 737 of file jtag/tcl.c.

References jtag_tap::enabled, jtag_call_event_callbacks(), JTAG_TAP_EVENT_DISABLE, and jtag_tap_handle_event().

Referenced by jim_jtag_tap_enabler().

◆ jtag_tap_enable()

static bool jtag_tap_enable ( struct jtag_tap * t )

static

Definition at line 722 of file jtag/tcl.c.

References jtag_tap::enabled, jtag_call_event_callbacks(), JTAG_TAP_EVENT_ENABLE, and jtag_tap_handle_event().

Referenced by jim_jtag_tap_enabler().

◆ jtag_tap_handle_event()

static void jtag_tap_handle_event	(	struct jtag_tap *	tap,
		enum jtag_event	e
	)

static

Definition at line 633 of file jtag/tcl.c.

References jtag_tap_event_action::body, jtag_tap::dotted_name, jtag_tap::enabled, jtag_tap_event_action::event, jtag_tap::event_action, jtag_tap_event_action::interp, jim_nvp_value2name_simple(), JTAG_TAP_EVENT_DISABLE, JTAG_TAP_EVENT_ENABLE, LOG_DEBUG, LOG_INFO, LOG_USER, jim_nvp::name, jtag_tap_event_action::next, NULL, and nvp_jtag_tap_event.

Referenced by jtag_notify_event(), jtag_tap_disable(), and jtag_tap_enable().

◆ scan_is_safe()

static bool scan_is_safe ( tap_state_t state )

static

Definition at line 62 of file jtag/tcl.c.

References state, TAP_DRPAUSE, TAP_IDLE, TAP_IRPAUSE, and TAP_RESET.

Referenced by COMMAND_HANDLER(), and jim_command_drscan().

Variable Documentation

◆ jtag_command_handlers

const struct command_registration jtag_command_handlers[]

static

Definition at line 1229 of file jtag/tcl.c.

Referenced by jtag_register_commands().

◆ jtag_command_handlers_to_move

const struct command_registration jtag_command_handlers_to_move[]

static

Initial value:

= {
    {
        .name = "drscan",
        .mode = COMMAND_EXEC,
        .jim_handler = jim_command_drscan,
        .help = "Execute Data Register (DR) scan for one TAP.  "
            "Other TAPs must be in BYPASS mode.",
        .usage = "tap_name [num_bits value]* ['-endstate' state_name]",
    },
    {
        .name = "flush_count",
        .mode = COMMAND_EXEC,
        .jim_handler = jim_command_flush_count,
        .help = "Returns the number of times the JTAG queue "
            "has been flushed.",
    },
    {
        .name = "pathmove",
        .mode = COMMAND_EXEC,
        .jim_handler = jim_command_pathmove,
        .usage = "start_state state1 [state2 [state3 ...]]",
        .help = "Move JTAG state machine from current state "
            "(start_state) to state1, then state2, state3, etc.",
    },
    COMMAND_REGISTRATION_DONE
}

Definition at line 253 of file jtag/tcl.c.

◆ jtag_subcommand_handlers

const struct command_registration jtag_subcommand_handlers[]

static

Definition at line 835 of file jtag/tcl.c.

◆ nvp_config_opts

struct jim_nvp nvp_config_opts[]

static

Initial value:

= {
    { .name = "-event",      .value = JCFG_EVENT },
    { .name = "-idcode",     .value = JCFG_IDCODE },
 
    { .name = NULL,          .value = -1 }
}

Definition at line 253 of file jtag/tcl.c.

Referenced by jtag_tap_configure_cmd().

◆ nvp_jtag_tap_event

const struct jim_nvp nvp_jtag_tap_event[]

static

Initial value:

= {
    { .value = JTAG_TRST_ASSERTED,          .name = "post-reset" },
    { .value = JTAG_TAP_EVENT_SETUP,        .name = "setup" },
    { .value = JTAG_TAP_EVENT_ENABLE,       .name = "tap-enable" },
    { .value = JTAG_TAP_EVENT_DISABLE,      .name = "tap-disable" },
 
    { .name = NULL, .value = -1 }
}

Definition at line 1 of file jtag/tcl.c.

Referenced by jtag_tap_configure_event(), and jtag_tap_handle_event().

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ NTAP_OPT_BYPASS

◆ NTAP_OPT_DISABLED

◆ NTAP_OPT_ENABLED

◆ NTAP_OPT_EXPECTED_ID

◆ NTAP_OPT_IRCAPTURE

◆ NTAP_OPT_IRLEN

◆ NTAP_OPT_IRMASK

◆ NTAP_OPT_VERSION

Enumeration Type Documentation

◆ jtag_tap_cfg_param

Function Documentation

◆ COMMAND_HANDLER() [1/12]

◆ COMMAND_HANDLER() [2/12]

◆ COMMAND_HANDLER() [3/12]

◆ COMMAND_HANDLER() [4/12]

◆ COMMAND_HANDLER() [5/12]

◆ COMMAND_HANDLER() [6/12]

◆ COMMAND_HANDLER() [7/12]

◆ COMMAND_HANDLER() [8/12]

◆ COMMAND_HANDLER() [9/12]

◆ COMMAND_HANDLER() [10/12]

◆ COMMAND_HANDLER() [11/12]

◆ COMMAND_HANDLER() [12/12]

◆ is_bad_irval()

◆ jim_command_drscan()

◆ jim_command_flush_count()

◆ jim_command_pathmove()

◆ jim_jtag_arp_init()

◆ jim_jtag_arp_init_reset()

◆ jim_jtag_configure()

◆ jim_jtag_names()

◆ jim_jtag_newtap()

◆ jim_jtag_tap_enabler()

◆ jim_newtap_cmd()

◆ jim_newtap_expected_id()

◆ jim_newtap_ir_param()

◆ jtag_notify_event()

◆ jtag_register_commands()

◆ jtag_tap_by_jim_obj()

◆ jtag_tap_configure_cmd()

◆ jtag_tap_configure_event()

◆ jtag_tap_disable()

◆ jtag_tap_enable()

◆ jtag_tap_handle_event()

◆ scan_is_safe()

Variable Documentation

◆ jtag_command_handlers

◆ jtag_command_handlers_to_move

◆ jtag_subcommand_handlers

◆ nvp_config_opts

◆ nvp_jtag_tap_event