summaryrefslogtreecommitdiff
path: root/drivers/isdn/hardware/mISDN/w6692.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/isdn/hardware/mISDN/w6692.c')
-rw-r--r--drivers/isdn/hardware/mISDN/w6692.c140
1 files changed, 66 insertions, 74 deletions
diff --git a/drivers/isdn/hardware/mISDN/w6692.c b/drivers/isdn/hardware/mISDN/w6692.c
index 2183357f0799..26a86b846099 100644
--- a/drivers/isdn/hardware/mISDN/w6692.c
+++ b/drivers/isdn/hardware/mISDN/w6692.c
@@ -465,6 +465,7 @@ W6692_empty_Bfifo(struct w6692_ch *wch, int count)
{
struct w6692_hw *card = wch->bch.hw;
u8 *ptr;
+ int maxlen;
pr_debug("%s: empty_Bfifo %d\n", card->name, count);
if (unlikely(wch->bch.state == ISDN_P_NONE)) {
@@ -474,20 +475,18 @@ W6692_empty_Bfifo(struct w6692_ch *wch, int count)
skb_trim(wch->bch.rx_skb, 0);
return;
}
- if (!wch->bch.rx_skb) {
- wch->bch.rx_skb = mI_alloc_skb(wch->bch.maxlen, GFP_ATOMIC);
- if (unlikely(!wch->bch.rx_skb)) {
- pr_info("%s: B receive out of memory\n", card->name);
- WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
- W_B_CMDR_RACT);
- return;
- }
+ if (test_bit(FLG_RX_OFF, &wch->bch.Flags)) {
+ wch->bch.dropcnt += count;
+ WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
+ return;
}
- if (wch->bch.rx_skb->len + count > wch->bch.maxlen) {
- pr_debug("%s: empty_Bfifo incoming packet too large\n",
- card->name);
+ maxlen = bchannel_get_rxbuf(&wch->bch, count);
+ if (maxlen < 0) {
WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
- skb_trim(wch->bch.rx_skb, 0);
+ if (wch->bch.rx_skb)
+ skb_trim(wch->bch.rx_skb, 0);
+ pr_warning("%s.B%d: No bufferspace for %d bytes\n",
+ card->name, wch->bch.nr, count);
return;
}
ptr = skb_put(wch->bch.rx_skb, count);
@@ -504,16 +503,22 @@ static void
W6692_fill_Bfifo(struct w6692_ch *wch)
{
struct w6692_hw *card = wch->bch.hw;
- int count;
+ int count, fillempty = 0;
u8 *ptr, cmd = W_B_CMDR_RACT | W_B_CMDR_XMS;
pr_debug("%s: fill Bfifo\n", card->name);
- if (!wch->bch.tx_skb)
- return;
- count = wch->bch.tx_skb->len - wch->bch.tx_idx;
- if (count <= 0)
- return;
- ptr = wch->bch.tx_skb->data + wch->bch.tx_idx;
+ if (!wch->bch.tx_skb) {
+ if (!test_bit(FLG_TX_EMPTY, &wch->bch.Flags))
+ return;
+ ptr = wch->bch.fill;
+ count = W_B_FIFO_THRESH;
+ fillempty = 1;
+ } else {
+ count = wch->bch.tx_skb->len - wch->bch.tx_idx;
+ if (count <= 0)
+ return;
+ ptr = wch->bch.tx_skb->data + wch->bch.tx_idx;
+ }
if (count > W_B_FIFO_THRESH)
count = W_B_FIFO_THRESH;
else if (test_bit(FLG_HDLC, &wch->bch.Flags))
@@ -522,9 +527,16 @@ W6692_fill_Bfifo(struct w6692_ch *wch)
pr_debug("%s: fill Bfifo%d/%d\n", card->name,
count, wch->bch.tx_idx);
wch->bch.tx_idx += count;
- outsb(wch->addr + W_B_XFIFO, ptr, count);
+ if (fillempty) {
+ while (count > 0) {
+ outsb(wch->addr + W_B_XFIFO, ptr, MISDN_BCH_FILL_SIZE);
+ count -= MISDN_BCH_FILL_SIZE;
+ }
+ } else {
+ outsb(wch->addr + W_B_XFIFO, ptr, count);
+ }
WriteW6692B(wch, W_B_CMDR, cmd);
- if (debug & DEBUG_HW_DFIFO) {
+ if ((debug & DEBUG_HW_BFIFO) && !fillempty) {
snprintf(card->log, 63, "B%1d-send %s %d ",
wch->bch.nr, card->name, count);
print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
@@ -638,17 +650,17 @@ w6692_mode(struct w6692_ch *wch, u32 pr)
static void
send_next(struct w6692_ch *wch)
{
- if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len)
+ if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len) {
W6692_fill_Bfifo(wch);
- else {
- if (wch->bch.tx_skb) {
- /* send confirm, on trans, free on hdlc. */
- if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
- confirm_Bsend(&wch->bch);
+ } else {
+ if (wch->bch.tx_skb)
dev_kfree_skb(wch->bch.tx_skb);
- }
- if (get_next_bframe(&wch->bch))
+ if (get_next_bframe(&wch->bch)) {
+ W6692_fill_Bfifo(wch);
+ test_and_clear_bit(FLG_TX_EMPTY, &wch->bch.Flags);
+ } else if (test_bit(FLG_TX_EMPTY, &wch->bch.Flags)) {
W6692_fill_Bfifo(wch);
+ }
}
}
@@ -698,7 +710,7 @@ W6692B_interrupt(struct w6692_hw *card, int ch)
if (count == 0)
count = W_B_FIFO_THRESH;
W6692_empty_Bfifo(wch, count);
- recv_Bchannel(&wch->bch, 0);
+ recv_Bchannel(&wch->bch, 0, false);
}
}
if (stat & W_B_EXI_RMR) {
@@ -714,9 +726,8 @@ W6692B_interrupt(struct w6692_hw *card, int ch)
W_B_CMDR_RRST | W_B_CMDR_RACT);
} else {
W6692_empty_Bfifo(wch, W_B_FIFO_THRESH);
- if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags) &&
- wch->bch.rx_skb && (wch->bch.rx_skb->len > 0))
- recv_Bchannel(&wch->bch, 0);
+ if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
+ recv_Bchannel(&wch->bch, 0, false);
}
}
if (stat & W_B_EXI_RDOV) {
@@ -738,8 +749,8 @@ W6692B_interrupt(struct w6692_hw *card, int ch)
wch->bch.nr, star);
}
if (star & W_B_STAR_XDOW) {
- pr_debug("%s: B%d XDOW proto=%x\n", card->name,
- wch->bch.nr, wch->bch.state);
+ pr_warning("%s: B%d XDOW proto=%x\n", card->name,
+ wch->bch.nr, wch->bch.state);
#ifdef ERROR_STATISTIC
wch->bch.err_xdu++;
#endif
@@ -752,20 +763,21 @@ W6692B_interrupt(struct w6692_hw *card, int ch)
}
}
send_next(wch);
- if (stat & W_B_EXI_XDUN)
+ if (star & W_B_STAR_XDOW)
return; /* handle XDOW only once */
}
if (stat & W_B_EXI_XDUN) {
- pr_debug("%s: B%d XDUN proto=%x\n", card->name,
- wch->bch.nr, wch->bch.state);
+ pr_warning("%s: B%d XDUN proto=%x\n", card->name,
+ wch->bch.nr, wch->bch.state);
#ifdef ERROR_STATISTIC
wch->bch.err_xdu++;
#endif
- WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT);
- /* resend */
+ /* resend - no XRST needed */
if (wch->bch.tx_skb) {
if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
wch->bch.tx_idx = 0;
+ } else if (test_bit(FLG_FILLEMPTY, &wch->bch.Flags)) {
+ test_and_set_bit(FLG_TX_EMPTY, &wch->bch.Flags);
}
send_next(wch);
}
@@ -944,22 +956,17 @@ w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
struct w6692_hw *card = bch->hw;
int ret = -EINVAL;
struct mISDNhead *hh = mISDN_HEAD_P(skb);
- u32 id;
- u_long flags;
+ unsigned long flags;
switch (hh->prim) {
case PH_DATA_REQ:
spin_lock_irqsave(&card->lock, flags);
ret = bchannel_senddata(bch, skb);
if (ret > 0) { /* direct TX */
- id = hh->id; /* skb can be freed */
ret = 0;
W6692_fill_Bfifo(bc);
- spin_unlock_irqrestore(&card->lock, flags);
- if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
- queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
- } else
- spin_unlock_irqrestore(&card->lock, flags);
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
return ret;
case PH_ACTIVATE_REQ:
spin_lock_irqsave(&card->lock, flags);
@@ -994,20 +1001,7 @@ w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
static int
channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
{
- int ret = 0;
-
- switch (cq->op) {
- case MISDN_CTRL_GETOP:
- cq->op = 0;
- break;
- /* Nothing implemented yet */
- case MISDN_CTRL_FILL_EMPTY:
- default:
- pr_info("%s: unknown Op %x\n", __func__, cq->op);
- ret = -EINVAL;
- break;
- }
- return ret;
+ return mISDN_ctrl_bchannel(bch, cq);
}
static int
@@ -1022,7 +1016,6 @@ open_bchannel(struct w6692_hw *card, struct channel_req *rq)
bch = &card->bc[rq->adr.channel - 1].bch;
if (test_and_set_bit(FLG_OPEN, &bch->Flags))
return -EBUSY; /* b-channel can be only open once */
- test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
bch->ch.protocol = rq->protocol;
rq->ch = &bch->ch;
return 0;
@@ -1035,7 +1028,10 @@ channel_ctrl(struct w6692_hw *card, struct mISDN_ctrl_req *cq)
switch (cq->op) {
case MISDN_CTRL_GETOP:
- cq->op = 0;
+ cq->op = MISDN_CTRL_L1_TIMER3;
+ break;
+ case MISDN_CTRL_L1_TIMER3:
+ ret = l1_event(card->dch.l1, HW_TIMER3_VALUE | (cq->p1 & 0xff));
break;
default:
pr_info("%s: unknown CTRL OP %x\n", card->name, cq->op);
@@ -1058,15 +1054,10 @@ w6692_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
switch (cmd) {
case CLOSE_CHANNEL:
test_and_clear_bit(FLG_OPEN, &bch->Flags);
- if (test_bit(FLG_ACTIVE, &bch->Flags)) {
- spin_lock_irqsave(&card->lock, flags);
- mISDN_freebchannel(bch);
- w6692_mode(bc, ISDN_P_NONE);
- spin_unlock_irqrestore(&card->lock, flags);
- } else {
- skb_queue_purge(&bch->rqueue);
- bch->rcount = 0;
- }
+ spin_lock_irqsave(&card->lock, flags);
+ mISDN_freebchannel(bch);
+ w6692_mode(bc, ISDN_P_NONE);
+ spin_unlock_irqrestore(&card->lock, flags);
ch->protocol = ISDN_P_NONE;
ch->peer = NULL;
module_put(THIS_MODULE);
@@ -1320,7 +1311,8 @@ setup_instance(struct w6692_hw *card)
card->dch.hw = card;
card->dch.dev.nrbchan = 2;
for (i = 0; i < 2; i++) {
- mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM);
+ mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM,
+ W_B_FIFO_THRESH);
card->bc[i].bch.hw = card;
card->bc[i].bch.nr = i + 1;
card->bc[i].bch.ch.nr = i + 1;