/* * States of the channel statemachine(s) for ctc and ctcmpc.
*/ enum ctc_ch_states { /* * Channel not assigned to any device, * initial state, direction invalid
*/
CTC_STATE_IDLE, /* * Channel assigned but not operating
*/
CTC_STATE_STOPPED,
CTC_STATE_STARTWAIT,
CTC_STATE_STARTRETRY,
CTC_STATE_SETUPWAIT,
CTC_STATE_RXINIT,
CTC_STATE_TXINIT,
CTC_STATE_RX,
CTC_STATE_TX,
CTC_STATE_RXIDLE,
CTC_STATE_TXIDLE,
CTC_STATE_RXERR,
CTC_STATE_TXERR,
CTC_STATE_TERM,
CTC_STATE_DTERM,
CTC_STATE_NOTOP,
CTC_NR_STATES, /* MUST be the last element of non-expanded states */ /* * additional MPC states
*/
CH_XID0_PENDING = CTC_NR_STATES,
CH_XID0_INPROGRESS,
CH_XID7_PENDING,
CH_XID7_PENDING1,
CH_XID7_PENDING2,
CH_XID7_PENDING3,
CH_XID7_PENDING4,
CTC_MPC_NR_STATES, /* MUST be the last element of expanded mpc states */
};
/* * ----- FSM (state/event/action) of the ctcmpc channel statemachine -----
*/ externconst fsm_node ctcmpc_ch_fsm[]; externint mpc_ch_fsm_len;
/* * Definitions for the device interface statemachine for ctc and mpc
*/
/* * States of the device interface statemachine.
*/ enum dev_states {
DEV_STATE_STOPPED,
DEV_STATE_STARTWAIT_RXTX,
DEV_STATE_STARTWAIT_RX,
DEV_STATE_STARTWAIT_TX,
DEV_STATE_STOPWAIT_RXTX,
DEV_STATE_STOPWAIT_RX,
DEV_STATE_STOPWAIT_TX,
DEV_STATE_RUNNING, /* * MUST be always the last element!!
*/
CTCM_NR_DEV_STATES
};
externconstchar *dev_state_names[];
/* * Events of the device interface statemachine. * ctcm and ctcmpc
*/ enum dev_events {
DEV_EVENT_START,
DEV_EVENT_STOP,
DEV_EVENT_RXUP,
DEV_EVENT_TXUP,
DEV_EVENT_RXDOWN,
DEV_EVENT_TXDOWN,
DEV_EVENT_RESTART, /* * MUST be always the last element!!
*/
CTCM_NR_DEV_EVENTS
};
externconstchar *dev_event_names[];
/* * Actions for the device interface statemachine. * ctc and ctcmpc
*/ /* static void dev_action_start(fsm_instance * fi, int event, void *arg); static void dev_action_stop(fsm_instance * fi, int event, void *arg); static void dev_action_restart(fsm_instance *fi, int event, void *arg); static void dev_action_chup(fsm_instance * fi, int event, void *arg); static void dev_action_chdown(fsm_instance * fi, int event, void *arg);
*/
/* * The (state/event/action) fsm table of the device interface statemachine. * ctcm and ctcmpc
*/ externconst fsm_node dev_fsm[]; externint dev_fsm_len;
/* * Definitions for the MPC Group statemachine
*/
/* * MPC Group Station FSM States
State Name When In This State ====================== ======================================= MPCG_STATE_RESET Initial State When Driver Loaded We receive and send NOTHING
MPCG_STATE_INOP INOP Received. Group level non-recoverable error
MPCG_STATE_READY XID exchanges for at least 1 write and 1 read channel have completed. Group is ready for data transfer.
States from ctc_mpc_alloc_channel ============================================================== MPCG_STATE_XID2INITW Awaiting XID2(0) Initiation ATTN from other side will start XID negotiations. Y-side protocol only.
MPCG_STATE_XID2INITX XID2(0) negotiations are in progress. At least 1, but not all, XID2(0)'s have been received from partner.
MPCG_STATE_XID7INITW XID2(0) complete No XID2(7)'s have yet been received. XID2(7) negotiations pending.
MPCG_STATE_XID7INITX XID2(7) negotiations in progress. At least 1, but not all, XID2(7)'s have been received from partner.
MPCG_STATE_XID7INITF XID2(7) negotiations complete. Transitioning to READY.
MPCG_STATE_READY Ready for Data Transfer.
States from ctc_mpc_establish_connectivity call ============================================================== MPCG_STATE_XID0IOWAIT Initiating XID2(0) negotiations. X-side protocol only. ATTN-BUSY from other side will convert this to Y-side protocol and the ctc_mpc_alloc_channel flow will begin.
MPCG_STATE_XID0IOWAIX XID2(0) negotiations are in progress. At least 1, but not all, XID2(0)'s have been received from partner.
MPCG_STATE_XID7INITI XID2(0) complete No XID2(7)'s have yet been received. XID2(7) negotiations pending.
MPCG_STATE_XID7INITZ XID2(7) negotiations in progress. At least 1, but not all, XID2(7)'s have been received from partner.
MPCG_STATE_XID7INITF XID2(7) negotiations complete. Transitioning to READY.
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