static void
main_rec_2bds0(struct BCState *bcs)
{
struct IsdnCardState *cs = bcs->cs;
int z1, z2, rcnt;
u_char f1, f2, cip;
int receive, count = 5;
struct sk_buff *skb;
Begin:
count--;
if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
debugl1(cs, "rec_data %d blocked", bcs->channel);
return;
}
SelFiFo(cs, HFCB_REC | HFCB_CHANNEL(bcs->channel));
cip = HFCB_FIFO | HFCB_F1 | HFCB_REC | HFCB_CHANNEL(bcs->channel);
WaitNoBusy(cs);
f1 = ReadReg(cs, HFCD_DATA, cip);
cip = HFCB_FIFO | HFCB_F2 | HFCB_REC | HFCB_CHANNEL(bcs->channel);
WaitNoBusy(cs);
f2 = ReadReg(cs, HFCD_DATA, cip);
if (f1 != f2) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc rec %d f1(%d) f2(%d)",
bcs->channel, f1, f2);
z1 = ReadZReg(cs, HFCB_FIFO | HFCB_Z1 | HFCB_REC | HFCB_CHANNEL(bcs->channel));
z2 = ReadZReg(cs, HFCB_FIFO | HFCB_Z2 | HFCB_REC | HFCB_CHANNEL(bcs->channel));
rcnt = z1 - z2;
if (rcnt < 0)
rcnt += cs->hw.hfcD.bfifosize;
rcnt++;
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc rec %d z1(%x) z2(%x) cnt(%d)",
bcs->channel, z1, z2, rcnt);
if ((skb = hfc_empty_fifo(bcs, rcnt))) {
skb_queue_tail(&bcs->rqueue, skb);
schedule_event(bcs, B_RCVBUFREADY);
}
rcnt = f1 - f2;
if (rcnt < 0)
rcnt += 32;
if (rcnt > 1)
receive = 1;
else
receive = 0;
} else
receive = 0;
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
if (count && receive)
goto Begin;
return;
}
static void
hfc_fill_fifo(struct BCState *bcs)
{
struct IsdnCardState *cs = bcs->cs;
int idx, fcnt;
int count;
u_char cip;
if (!bcs->tx_skb)
return;
if (bcs->tx_skb->len <= 0)
return;
SelFiFo(cs, HFCB_SEND | HFCB_CHANNEL(bcs->channel));
cip = HFCB_FIFO | HFCB_F1 | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
WaitNoBusy(cs);
bcs->hw.hfc.f1 = ReadReg(cs, HFCD_DATA, cip);
WaitNoBusy(cs);
cip = HFCB_FIFO | HFCB_F2 | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
WaitNoBusy(cs);
bcs->hw.hfc.f2 = ReadReg(cs, HFCD_DATA, cip);
bcs->hw.hfc.send[bcs->hw.hfc.f1] = ReadZReg(cs, HFCB_FIFO | HFCB_Z1 | HFCB_SEND | HFCB_CHANNEL(bcs->channel));
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_fill_fifo %d f1(%d) f2(%d) z1(%x)",
bcs->channel, bcs->hw.hfc.f1, bcs->hw.hfc.f2,
bcs->hw.hfc.send[bcs->hw.hfc.f1]);
fcnt = bcs->hw.hfc.f1 - bcs->hw.hfc.f2;
if (fcnt < 0)
fcnt += 32;
if (fcnt > 30) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_fill_fifo more as 30 frames");
return;
}
count = GetFreeFifoBytes_B(bcs);
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_fill_fifo %d count(%u/%d),%lx",
bcs->channel, bcs->tx_skb->len,
count, current->state);
if (count < bcs->tx_skb->len) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_fill_fifo no fifo mem");
return;
}
cip = HFCB_FIFO | HFCB_FIFO_IN | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
idx = 0;
WaitForBusy(cs);
WaitNoBusy(cs);
WriteReg(cs, HFCD_DATA_NODEB, cip, bcs->tx_skb->data[idx++]);
while (idx < bcs->tx_skb->len) {
if (!WaitNoBusy(cs))
break;
WriteReg(cs, HFCD_DATA_NODEB, cip, bcs->tx_skb->data[idx]);
idx++;
}
if (idx != bcs->tx_skb->len) {
debugl1(cs, "FIFO Send BUSY error");
printk(KERN_WARNING "HFC S FIFO channel %d BUSY Error\n", bcs->channel);
} else {
bcs->tx_cnt -= bcs->tx_skb->len;
if (test_bit(FLG_LLI_L1WAKEUP, &bcs->st->lli.flag) &&
(PACKET_NOACK != bcs->tx_skb->pkt_type)) {
u_long flags;
spin_lock_irqsave(&bcs->aclock, flags);
bcs->ackcnt += bcs->tx_skb->len;
spin_unlock_irqrestore(&bcs->aclock, flags);
schedule_event(bcs, B_ACKPENDING);
}
dev_kfree_skb_any(bcs->tx_skb);
bcs->tx_skb = NULL;
}
WaitForBusy(cs);
WaitNoBusy(cs);
ReadReg(cs, HFCD_DATA, HFCB_FIFO | HFCB_F1_INC | HFCB_SEND | HFCB_CHANNEL(bcs->channel));
WaitForBusy(cs);
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
return;
}
static void
hfc_fill_fifo(struct BCState *bcs)
{
struct IsdnCardState *cs = bcs->cs;
long flags;
int idx, fcnt;
int count;
u_char cip;
char tmp[64];
if (!bcs->hw.hfc.tx_skb)
return;
if (bcs->hw.hfc.tx_skb->len <= 0)
return;
save_flags(flags);
cli();
SelFiFo(cs, HFCB_SEND | HFCB_CHANNEL(bcs->channel));
cip = HFCB_FIFO | HFCB_F1 | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
WaitNoBusy(cs);
bcs->hw.hfc.f1 = ReadReg(cs, HFCD_DATA, cip);
WaitNoBusy(cs);
cip = HFCB_FIFO | HFCB_F2 | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
WaitNoBusy(cs);
bcs->hw.hfc.f2 = ReadReg(cs, HFCD_DATA, cip);
bcs->hw.hfc.send[bcs->hw.hfc.f1] = ReadZReg(cs, HFCB_FIFO | HFCB_Z1 | HFCB_SEND | HFCB_CHANNEL(bcs->channel));
sti();
if (cs->debug & L1_DEB_HSCX) {
sprintf(tmp, "hfc_fill_fifo %d f1(%d) f2(%d) z1(%x)",
bcs->channel, bcs->hw.hfc.f1, bcs->hw.hfc.f2,
bcs->hw.hfc.send[bcs->hw.hfc.f1]);
debugl1(cs, tmp);
}
fcnt = bcs->hw.hfc.f1 - bcs->hw.hfc.f2;
if (fcnt < 0)
fcnt += 32;
if (fcnt > 30) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_fill_fifo more as 30 frames");
restore_flags(flags);
return;
}
count = GetFreeFifoBytes_B(bcs);
if (cs->debug & L1_DEB_HSCX) {
sprintf(tmp, "hfc_fill_fifo %d count(%d/%d),%lx",
bcs->channel, bcs->hw.hfc.tx_skb->len,
count, current->state);
debugl1(cs, tmp);
}
if (count < bcs->hw.hfc.tx_skb->len) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_fill_fifo no fifo mem");
restore_flags(flags);
return;
}
cip = HFCB_FIFO | HFCB_FIFO_IN | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
idx = 0;
cli();
WaitForBusy(cs);
WaitNoBusy(cs);
WriteReg(cs, HFCD_DATA_NODEB, cip, bcs->hw.hfc.tx_skb->data[idx++]);
while (idx < bcs->hw.hfc.tx_skb->len) {
cli();
if (!WaitNoBusy(cs))
break;
WriteReg(cs, HFCD_DATA_NODEB, cip, bcs->hw.hfc.tx_skb->data[idx]);
sti();
idx++;
}
if (idx != bcs->hw.hfc.tx_skb->len) {
sti();
debugl1(cs, "FIFO Send BUSY error");
printk(KERN_WARNING "HFC S FIFO channel %d BUSY Error\n", bcs->channel);
} else {
bcs->tx_cnt -= bcs->hw.hfc.tx_skb->len;
if (bcs->st->lli.l1writewakeup &&
(PACKET_NOACK != bcs->hw.hfc.tx_skb->pkt_type))
bcs->st->lli.l1writewakeup(bcs->st, bcs->hw.hfc.tx_skb->len);
dev_kfree_skb(bcs->hw.hfc.tx_skb);
bcs->hw.hfc.tx_skb = NULL;
}
WaitForBusy(cs);
cli();
WaitNoBusy(cs);
ReadReg(cs, HFCD_DATA, HFCB_FIFO | HFCB_F1_INC | HFCB_SEND | HFCB_CHANNEL(bcs->channel));
sti();
WaitForBusy(cs);
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
restore_flags(flags);
return;
}
static struct sk_buff
*hfc_empty_fifo(struct BCState *bcs, int count)
{
u_char *ptr;
struct sk_buff *skb;
struct IsdnCardState *cs = bcs->cs;
int idx;
int chksum;
u_char stat, cip;
if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
debugl1(cs, "hfc_empty_fifo");
idx = 0;
if (count > HSCX_BUFMAX + 3) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "hfc_empty_fifo: incoming packet too large");
cip = HFCB_FIFO | HFCB_FIFO_OUT | HFCB_REC | HFCB_CHANNEL(bcs->channel);
while (idx++ < count) {
WaitNoBusy(cs);
ReadReg(cs, HFCD_DATA_NODEB, cip);
}
skb = NULL;
} else if (count < 4) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "hfc_empty_fifo: incoming packet too small");
cip = HFCB_FIFO | HFCB_FIFO_OUT | HFCB_REC | HFCB_CHANNEL(bcs->channel);
#ifdef ERROR_STATISTIC
bcs->err_inv++;
#endif
while ((idx++ < count) && WaitNoBusy(cs))
ReadReg(cs, HFCD_DATA_NODEB, cip);
skb = NULL;
} else if (!(skb = dev_alloc_skb(count - 3)))
printk(KERN_WARNING "HFC: receive out of memory\n");
else {
ptr = skb_put(skb, count - 3);
idx = 0;
cip = HFCB_FIFO | HFCB_FIFO_OUT | HFCB_REC | HFCB_CHANNEL(bcs->channel);
while (idx < (count - 3)) {
if (!WaitNoBusy(cs))
break;
*ptr = ReadReg(cs, HFCD_DATA_NODEB, cip);
ptr++;
idx++;
}
if (idx != count - 3) {
debugl1(cs, "RFIFO BUSY error");
printk(KERN_WARNING "HFC FIFO channel %d BUSY Error\n", bcs->channel);
dev_kfree_skb_irq(skb);
skb = NULL;
} else {
WaitNoBusy(cs);
chksum = (ReadReg(cs, HFCD_DATA, cip) << 8);
WaitNoBusy(cs);
chksum += ReadReg(cs, HFCD_DATA, cip);
WaitNoBusy(cs);
stat = ReadReg(cs, HFCD_DATA, cip);
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_empty_fifo %d chksum %x stat %x",
bcs->channel, chksum, stat);
if (stat) {
debugl1(cs, "FIFO CRC error");
dev_kfree_skb_irq(skb);
skb = NULL;
#ifdef ERROR_STATISTIC
bcs->err_crc++;
#endif
}
}
}
WaitForBusy(cs);
WaitNoBusy(cs);
stat = ReadReg(cs, HFCD_DATA, HFCB_FIFO | HFCB_F2_INC |
HFCB_REC | HFCB_CHANNEL(bcs->channel));
WaitForBusy(cs);
return (skb);
}
static void
hfc_fill_fifo(struct BCState *bcs)
{
struct IsdnCardState *cs = bcs->cs;
u_int idx;
int fcnt;
u_int count;
u8 cip;
if (!bcs->tx_skb)
return;
if (bcs->tx_skb->len <= 0)
return;
SelFiFo(cs, HFCB_SEND | HFCB_CHANNEL(bcs->channel));
cip = HFCB_FIFO | HFCB_F1 | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
WaitNoBusy(cs);
bcs->hw.hfc.f1 = ReadReg(cs, HFCD_DATA, cip);
WaitNoBusy(cs);
cip = HFCB_FIFO | HFCB_F2 | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
WaitNoBusy(cs);
bcs->hw.hfc.f2 = ReadReg(cs, HFCD_DATA, cip);
bcs->hw.hfc.send[bcs->hw.hfc.f1] = ReadZReg(cs, HFCB_FIFO | HFCB_Z1 | HFCB_SEND | HFCB_CHANNEL(bcs->channel));
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_fill_fifo %d f1(%d) f2(%d) z1(%x)",
bcs->channel, bcs->hw.hfc.f1, bcs->hw.hfc.f2,
bcs->hw.hfc.send[bcs->hw.hfc.f1]);
fcnt = bcs->hw.hfc.f1 - bcs->hw.hfc.f2;
if (fcnt < 0)
fcnt += 32;
if (fcnt > 30) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_fill_fifo more as 30 frames");
return;
}
count = GetFreeFifoBytes_B(bcs);
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_fill_fifo %d count(%ld/%d),%lx",
bcs->channel, bcs->tx_skb->len,
count, current->state);
if (count < bcs->tx_skb->len) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "hfc_fill_fifo no fifo mem");
return;
}
cip = HFCB_FIFO | HFCB_FIFO_IN | HFCB_SEND | HFCB_CHANNEL(bcs->channel);
idx = 0;
WaitForBusy(cs);
WaitNoBusy(cs);
WriteReg(cs, HFCD_DATA_NODEB, cip, bcs->tx_skb->data[idx++]);
while (idx < bcs->tx_skb->len) {
if (!WaitNoBusy(cs))
break;
WriteReg(cs, HFCD_DATA_NODEB, cip, bcs->tx_skb->data[idx]);
idx++;
}
if (idx != bcs->tx_skb->len) {
debugl1(cs, "FIFO Send BUSY error");
printk(KERN_WARNING "HFC S FIFO channel %d BUSY Error\n", bcs->channel);
} else {
bcs->tx_cnt -= bcs->tx_skb->len;
xmit_complete_b(bcs);
}
WaitForBusy(cs);
WaitNoBusy(cs);
ReadReg(cs, HFCD_DATA, HFCB_FIFO | HFCB_F1_INC | HFCB_SEND | HFCB_CHANNEL(bcs->channel));
WaitForBusy(cs);
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
return;
}
