/**
* Close an interface.
* Called from generic network layer when ifconfig down is run.
*
* dev Pointer to interface struct.
*
* returns 0 on success, -ERRNO on failure. (Never fails.)
*/
int ctcm_close(struct net_device *dev)
{
struct ctcm_priv *priv = dev->ml_priv;
CTCMY_DBF_DEV_NAME(SETUP, dev, "");
if (!IS_MPC(priv))
fsm_event(priv->fsm, DEV_EVENT_STOP, dev);
return 0;
}
void Start_fsm_managerTask(void const * argument)
{
osEvent event;
fsm_event_f fsm_event;
/* Initialize FSM */
fsm_client_init(&fsm);
/* Infinite loop */
for(;;)
{
/* Get fsm event */
event = osMailGet(queue_fsm_eventsHandle, osWaitForever);
if (event.status == osEventMail)
{
/* Retrieve event function */
fsm_event = *((fsm_event_f *) event.value.v);
/* Trigger event */
fsm_event(&fsm);
}
}
}
static void ctcmpc_send_sweep_req(struct channel *rch)
{
struct net_device *dev = rch->netdev;
struct ctcm_priv *priv;
struct mpc_group *grp;
struct th_sweep *header;
struct sk_buff *sweep_skb;
struct channel *ch;
/* int rc = 0; */
priv = dev->ml_priv;
grp = priv->mpcg;
ch = priv->channel[WRITE];
/* sweep processing is not complete until response and request */
/* has completed for all read channels in group */
if (grp->in_sweep == 0) {
grp->in_sweep = 1;
grp->sweep_rsp_pend_num = grp->active_channels[READ];
grp->sweep_req_pend_num = grp->active_channels[READ];
}
sweep_skb = __dev_alloc_skb(MPC_BUFSIZE_DEFAULT, GFP_ATOMIC|GFP_DMA);
if (sweep_skb == NULL) {
/* rc = -ENOMEM; */
goto nomem;
}
header = kmalloc(TH_SWEEP_LENGTH, gfp_type());
if (!header) {
dev_kfree_skb_any(sweep_skb);
/* rc = -ENOMEM; */
goto nomem;
}
header->th.th_seg = 0x00 ;
header->th.th_ch_flag = TH_SWEEP_REQ; /* 0x0f */
header->th.th_blk_flag = 0x00;
header->th.th_is_xid = 0x00;
header->th.th_seq_num = 0x00;
header->sw.th_last_seq = ch->th_seq_num;
memcpy(skb_put(sweep_skb, TH_SWEEP_LENGTH), header, TH_SWEEP_LENGTH);
kfree(header);
dev->trans_start = jiffies;
skb_queue_tail(&ch->sweep_queue, sweep_skb);
fsm_addtimer(&ch->sweep_timer, 100, CTC_EVENT_RSWEEP_TIMER, ch);
return;
nomem:
grp->in_sweep = 0;
ctcm_clear_busy(dev);
fsm_event(grp->fsm, MPCG_EVENT_INOP, dev);
return;
}
/**
* Check sense of a unit check.
*
* ch The channel, the sense code belongs to.
* sense The sense code to inspect.
*/
static inline void ccw_unit_check(struct channel *ch, __u8 sense)
{
CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
"%s(%s): %02x",
CTCM_FUNTAIL, ch->id, sense);
if (sense & SNS0_INTERVENTION_REQ) {
if (sense & 0x01) {
if (ch->sense_rc != 0x01) {
pr_notice(
"%s: The communication peer has "
"disconnected\n", ch->id);
ch->sense_rc = 0x01;
}
fsm_event(ch->fsm, CTC_EVENT_UC_RCRESET, ch);
} else {
if (ch->sense_rc != SNS0_INTERVENTION_REQ) {
pr_notice(
"%s: The remote operating system is "
"not available\n", ch->id);
ch->sense_rc = SNS0_INTERVENTION_REQ;
}
fsm_event(ch->fsm, CTC_EVENT_UC_RSRESET, ch);
}
} else if (sense & SNS0_EQUIPMENT_CHECK) {
if (sense & SNS0_BUS_OUT_CHECK) {
if (ch->sense_rc != SNS0_BUS_OUT_CHECK) {
CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
"%s(%s): remote HW error %02x",
CTCM_FUNTAIL, ch->id, sense);
ch->sense_rc = SNS0_BUS_OUT_CHECK;
}
fsm_event(ch->fsm, CTC_EVENT_UC_HWFAIL, ch);
} else {
if (ch->sense_rc != SNS0_EQUIPMENT_CHECK) {
CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
"%s(%s): remote read parity error %02x",
CTCM_FUNTAIL, ch->id, sense);
ch->sense_rc = SNS0_EQUIPMENT_CHECK;
}
fsm_event(ch->fsm, CTC_EVENT_UC_RXPARITY, ch);
}
} else if (sense & SNS0_BUS_OUT_CHECK) {
if (ch->sense_rc != SNS0_BUS_OUT_CHECK) {
CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
"%s(%s): BUS OUT error %02x",
CTCM_FUNTAIL, ch->id, sense);
ch->sense_rc = SNS0_BUS_OUT_CHECK;
}
if (sense & 0x04) /* data-streaming timeout */
fsm_event(ch->fsm, CTC_EVENT_UC_TXTIMEOUT, ch);
else /* Data-transfer parity error */
fsm_event(ch->fsm, CTC_EVENT_UC_TXPARITY, ch);
} else if (sense & SNS0_CMD_REJECT) {
if (ch->sense_rc != SNS0_CMD_REJECT) {
CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
"%s(%s): Command rejected",
CTCM_FUNTAIL, ch->id);
ch->sense_rc = SNS0_CMD_REJECT;
}
} else if (sense == 0) {
CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
"%s(%s): Unit check ZERO",
CTCM_FUNTAIL, ch->id);
fsm_event(ch->fsm, CTC_EVENT_UC_ZERO, ch);
} else {
CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
"%s(%s): Unit check code %02x unknown",
CTCM_FUNTAIL, ch->id, sense);
fsm_event(ch->fsm, CTC_EVENT_UC_UNKNOWN, ch);
}
}