static irqreturn_t
nj_u_interrupt(int intno, void *dev_id, struct pt_regs *regs)
{
struct IsdnCardState *cs = dev_id;
u8 val, sval;
spin_lock(&cs->lock);
if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
NETJET_ISACIRQ)) {
val = NETjet_ReadIC(cs, ICC_ISTA);
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "tiger: i1 %x %x", sval, val);
if (val) {
icc_interrupt(cs, val);
NETjet_WriteIC(cs, ICC_MASK, 0xFF);
NETjet_WriteIC(cs, ICC_MASK, 0x0);
}
}
/* start new code 13/07/00 GE */
/* set bits in sval to indicate which page is free */
if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
/* the 2nd write page is free */
sval = 0x08;
else /* the 1st write page is free */
sval = 0x04;
if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
/* the 2nd read page is free */
sval = sval | 0x02;
else /* the 1st read page is free */
sval = sval | 0x01;
if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */
{
cs->hw.njet.irqstat0 = sval;
if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
(cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
/* we have a read dma int */
read_tiger(cs);
if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
(cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
/* we have a write dma int */
write_tiger(cs);
/* end new code 13/07/00 GE */
}
/* if (!testcnt--) {
cs->hw.njet.dmactrl = 0;
byteout(cs->hw.njet.base + NETJET_DMACTRL,
cs->hw.njet.dmactrl);
byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0);
}
*/
spin_unlock(&cs->lock);
return IRQ_HANDLED;
}
static irqreturn_t
netjet_u_interrupt(int intno, void *dev_id, struct pt_regs *regs)
{
struct IsdnCardState *cs = dev_id;
u_char val, sval;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
NETJET_ISACIRQ)) {
val = NETjet_ReadIC(cs, ICC_ISTA);
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "tiger: i1 %x %x", sval, val);
if (val) {
icc_interrupt(cs, val);
NETjet_WriteIC(cs, ICC_MASK, 0xFF);
NETjet_WriteIC(cs, ICC_MASK, 0x0);
}
}
/* start new code 13/07/00 GE */
/* set bits in sval to indicate which page is free */
if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
/* the 2nd write page is free */
sval = 0x08;
else /* the 1st write page is free */
sval = 0x04;
if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
/* the 2nd read page is free */
sval = sval | 0x02;
else /* the 1st read page is free */
sval = sval | 0x01;
if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */
{
if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
cs->hw.njet.irqstat0 = sval;
if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
(cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
/* we have a read dma int */
read_tiger(cs);
if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
(cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
/* we have a write dma int */
write_tiger(cs);
/* end new code 13/07/00 GE */
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
}
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static void
nj_u_init(struct IsdnCardState *cs)
{
inittiger(cs);
initicc(cs);
/* Reenable all IRQ */
NETjet_WriteIC(cs, ICC_MASK, 0);
}
static irqreturn_t
netjet_s_interrupt(int intno, void *dev_id, struct pt_regs *regs)
{
struct IsdnCardState *cs = dev_id;
u_char val, s1val, s0val;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
s1val = bytein(cs->hw.njet.base + NETJET_IRQSTAT1);
if (!(s1val & NETJET_ISACIRQ)) {
val = NETjet_ReadIC(cs, ISAC_ISTA);
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "tiger: i1 %x %x", s1val, val);
if (val) {
isac_interrupt(cs, val);
NETjet_WriteIC(cs, ISAC_MASK, 0xFF);
NETjet_WriteIC(cs, ISAC_MASK, 0x0);
}
s1val = 1;
} else
s1val = 0;
/*
* read/write stat0 is better, because lower IRQ rate
* Note the IRQ is on for 125 us if a condition match
* thats long on modern CPU and so the IRQ is reentered
* all the time.
*/
s0val = bytein(cs->hw.njet.base + NETJET_IRQSTAT0);
if ((s0val | s1val)==0) { // shared IRQ
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_NONE;
}
if (s0val)
byteout(cs->hw.njet.base + NETJET_IRQSTAT0, s0val);
/* start new code 13/07/00 GE */
/* set bits in sval to indicate which page is free */
if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
/* the 2nd write page is free */
s0val = 0x08;
else /* the 1st write page is free */
s0val = 0x04;
if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
/* the 2nd read page is free */
s0val |= 0x02;
else /* the 1st read page is free */
s0val |= 0x01;
if (s0val != cs->hw.njet.last_is0) /* we have a DMA interrupt */
{
if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
printk(KERN_WARNING "nj LOCK_ATOMIC s0val %x->%x\n",
cs->hw.njet.last_is0, s0val);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
cs->hw.njet.irqstat0 = s0val;
if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
(cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
/* we have a read dma int */
read_tiger(cs);
if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
(cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
/* we have a write dma int */
write_tiger(cs);
/* end new code 13/07/00 GE */
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
}
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static void
netjet_u_interrupt(int intno, void *dev_id, struct pt_regs *regs)
{
struct IsdnCardState *cs = dev_id;
u_char val, sval;
long flags;
if (!cs) {
printk(KERN_WARNING "NETspider-U: Spurious interrupt!\n");
return;
}
if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
NETJET_ISACIRQ)) {
val = NETjet_ReadIC(cs, ICC_ISTA);
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "tiger: i1 %x %x", sval, val);
if (val) {
icc_interrupt(cs, val);
NETjet_WriteIC(cs, ICC_MASK, 0xFF);
NETjet_WriteIC(cs, ICC_MASK, 0x0);
}
}
save_flags(flags);
cli();
/* start new code 13/07/00 GE */
/* set bits in sval to indicate which page is free */
if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
/* the 2nd write page is free */
sval = 0x08;
else /* the 1st write page is free */
sval = 0x04;
if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
/* the 2nd read page is free */
sval = sval | 0x02;
else /* the 1st read page is free */
sval = sval | 0x01;
if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */
{
if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
restore_flags(flags);
return;
}
cs->hw.njet.irqstat0 = sval;
restore_flags(flags);
if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
(cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
/* we have a read dma int */
read_tiger(cs);
if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
(cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
/* we have a write dma int */
write_tiger(cs);
/* end new code 13/07/00 GE */
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
} else
restore_flags(flags);
/* if (!testcnt--) {
cs->hw.njet.dmactrl = 0;
byteout(cs->hw.njet.base + NETJET_DMACTRL,
cs->hw.njet.dmactrl);
byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0);
}
*/
}
