static void
ergo_irq_bh(struct work_struct *ugli_api)
{
hysdn_card * card = container_of(ugli_api, hysdn_card, irq_queue);
tErgDpram *dpr;
int again;
unsigned long flags;
if (card->state != CARD_STATE_RUN)
return; /* invalid call */
dpr = card->dpram; /* point to DPRAM */
spin_lock_irqsave(&card->hysdn_lock, flags);
if (card->hw_lock) {
spin_unlock_irqrestore(&card->hysdn_lock, flags); /* hardware currently unavailable */
return;
}
card->hw_lock = 1; /* we now lock the hardware */
do {
sti(); /* reenable other ints */
again = 0; /* assume loop not to be repeated */
if (!dpr->ToHyFlag) {
/* we are able to send a buffer */
if (hysdn_sched_tx(card, dpr->ToHyBuf, &dpr->ToHySize, &dpr->ToHyChannel,
ERG_TO_HY_BUF_SIZE)) {
dpr->ToHyFlag = 1; /* enable tx */
again = 1; /* restart loop */
}
} /* we are able to send a buffer */
if (dpr->ToPcFlag) {
/* a message has arrived for us, handle it */
if (hysdn_sched_rx(card, dpr->ToPcBuf, dpr->ToPcSize, dpr->ToPcChannel)) {
dpr->ToPcFlag = 0; /* we worked the data */
again = 1; /* restart loop */
}
} /* a message has arrived for us */
cli(); /* no further ints */
if (again) {
dpr->ToHyInt = 1;
dpr->ToPcInt = 1; /* interrupt to E1 for all cards */
} else
card->hw_lock = 0; /* free hardware again */
} while (again); /* until nothing more to do */
spin_unlock_irqrestore(&card->hysdn_lock, flags);
} /* ergo_irq_bh */
static void
ergo_irq_bh(struct work_struct *ugli_api)
{
hysdn_card * card = container_of(ugli_api, hysdn_card, irq_queue);
tErgDpram *dpr;
int again;
unsigned long flags;
if (card->state != CARD_STATE_RUN)
return;
dpr = card->dpram;
spin_lock_irqsave(&card->hysdn_lock, flags);
if (card->hw_lock) {
spin_unlock_irqrestore(&card->hysdn_lock, flags);
return;
}
card->hw_lock = 1;
do {
again = 0;
if (!dpr->ToHyFlag) {
if (hysdn_sched_tx(card, dpr->ToHyBuf, &dpr->ToHySize, &dpr->ToHyChannel,
ERG_TO_HY_BUF_SIZE)) {
dpr->ToHyFlag = 1;
again = 1;
}
}
if (dpr->ToPcFlag) {
if (hysdn_sched_rx(card, dpr->ToPcBuf, dpr->ToPcSize, dpr->ToPcChannel)) {
dpr->ToPcFlag = 0;
again = 1;
}
}
if (again) {
dpr->ToHyInt = 1;
dpr->ToPcInt = 1;
} else
card->hw_lock = 0;
} while (again);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
}
