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path: root/drivers/isdn/hardware/mISDN/hfcpci.c
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Diffstat (limited to 'drivers/isdn/hardware/mISDN/hfcpci.c')
-rw-r--r--drivers/isdn/hardware/mISDN/hfcpci.c105
1 files changed, 59 insertions, 46 deletions
diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index 641a9cd1a532..228ffbed1286 100644
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -257,7 +257,7 @@ reset_hfcpci(struct hfc_pci *hc)
Write_hfc(hc, HFCPCI_INT_M1, hc->hw.int_m1);
/* Clear already pending ints */
- if (Read_hfc(hc, HFCPCI_INT_S1));
+ val = Read_hfc(hc, HFCPCI_INT_S1);
/* set NT/TE mode */
hfcpci_setmode(hc);
@@ -452,7 +452,7 @@ hfcpci_empty_bfifo(struct bchannel *bch, struct bzfifo *bz,
}
bz->za[new_f2].z2 = cpu_to_le16(new_z2);
bz->f2 = new_f2; /* next buffer */
- recv_Bchannel(bch);
+ recv_Bchannel(bch, MISDN_ID_ANY);
}
}
@@ -499,7 +499,8 @@ receive_dmsg(struct hfc_pci *hc)
df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) |
(MAX_D_FRAMES + 1); /* next buffer */
df->za[df->f2 & D_FREG_MASK].z2 =
- cpu_to_le16((le16_to_cpu(zp->z2) + rcnt) & (D_FIFO_SIZE - 1));
+ cpu_to_le16((le16_to_cpu(zp->z2) + rcnt) &
+ (D_FIFO_SIZE - 1));
} else {
dch->rx_skb = mI_alloc_skb(rcnt - 3, GFP_ATOMIC);
if (!dch->rx_skb) {
@@ -541,35 +542,45 @@ receive_dmsg(struct hfc_pci *hc)
* check for transparent receive data and read max one 'poll' size if avail
*/
static void
-hfcpci_empty_fifo_trans(struct bchannel *bch, struct bzfifo *bz, u_char *bdata)
+hfcpci_empty_fifo_trans(struct bchannel *bch, struct bzfifo *rxbz,
+ struct bzfifo *txbz, u_char *bdata)
{
- __le16 *z1r, *z2r;
- int new_z2, fcnt, maxlen;
- u_char *ptr, *ptr1;
+ __le16 *z1r, *z2r, *z1t, *z2t;
+ int new_z2, fcnt_rx, fcnt_tx, maxlen;
+ u_char *ptr, *ptr1;
- z1r = &bz->za[MAX_B_FRAMES].z1; /* pointer to z reg */
+ z1r = &rxbz->za[MAX_B_FRAMES].z1; /* pointer to z reg */
z2r = z1r + 1;
+ z1t = &txbz->za[MAX_B_FRAMES].z1;
+ z2t = z1t + 1;
- fcnt = le16_to_cpu(*z1r) - le16_to_cpu(*z2r);
- if (!fcnt)
+ fcnt_rx = le16_to_cpu(*z1r) - le16_to_cpu(*z2r);
+ if (!fcnt_rx)
return; /* no data avail */
- if (fcnt <= 0)
- fcnt += B_FIFO_SIZE; /* bytes actually buffered */
- new_z2 = le16_to_cpu(*z2r) + fcnt; /* new position in fifo */
+ if (fcnt_rx <= 0)
+ fcnt_rx += B_FIFO_SIZE; /* bytes actually buffered */
+ new_z2 = le16_to_cpu(*z2r) + fcnt_rx; /* new position in fifo */
if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
new_z2 -= B_FIFO_SIZE; /* buffer wrap */
- if (fcnt > MAX_DATA_SIZE) { /* flush, if oversized */
+ if (fcnt_rx > MAX_DATA_SIZE) { /* flush, if oversized */
*z2r = cpu_to_le16(new_z2); /* new position */
return;
}
- bch->rx_skb = mI_alloc_skb(fcnt, GFP_ATOMIC);
+ fcnt_tx = le16_to_cpu(*z2t) - le16_to_cpu(*z1t);
+ if (fcnt_tx <= 0)
+ fcnt_tx += B_FIFO_SIZE;
+ /* fcnt_tx contains available bytes in tx-fifo */
+ fcnt_tx = B_FIFO_SIZE - fcnt_tx;
+ /* remaining bytes to send (bytes in tx-fifo) */
+
+ bch->rx_skb = mI_alloc_skb(fcnt_rx, GFP_ATOMIC);
if (bch->rx_skb) {
- ptr = skb_put(bch->rx_skb, fcnt);
- if (le16_to_cpu(*z2r) + fcnt <= B_FIFO_SIZE + B_SUB_VAL)
- maxlen = fcnt; /* complete transfer */
+ ptr = skb_put(bch->rx_skb, fcnt_rx);
+ if (le16_to_cpu(*z2r) + fcnt_rx <= B_FIFO_SIZE + B_SUB_VAL)
+ maxlen = fcnt_rx; /* complete transfer */
else
maxlen = B_FIFO_SIZE + B_SUB_VAL - le16_to_cpu(*z2r);
/* maximum */
@@ -577,14 +588,14 @@ hfcpci_empty_fifo_trans(struct bchannel *bch, struct bzfifo *bz, u_char *bdata)
ptr1 = bdata + (le16_to_cpu(*z2r) - B_SUB_VAL);
/* start of data */
memcpy(ptr, ptr1, maxlen); /* copy data */
- fcnt -= maxlen;
+ fcnt_rx -= maxlen;
- if (fcnt) { /* rest remaining */
+ if (fcnt_rx) { /* rest remaining */
ptr += maxlen;
ptr1 = bdata; /* start of buffer */
- memcpy(ptr, ptr1, fcnt); /* rest */
+ memcpy(ptr, ptr1, fcnt_rx); /* rest */
}
- recv_Bchannel(bch);
+ recv_Bchannel(bch, fcnt_tx); /* bch, id */
} else
printk(KERN_WARNING "HFCPCI: receive out of memory\n");
@@ -600,26 +611,28 @@ main_rec_hfcpci(struct bchannel *bch)
struct hfc_pci *hc = bch->hw;
int rcnt, real_fifo;
int receive = 0, count = 5;
- struct bzfifo *bz;
+ struct bzfifo *txbz, *rxbz;
u_char *bdata;
struct zt *zp;
if ((bch->nr & 2) && (!hc->hw.bswapped)) {
- bz = &((union fifo_area *)(hc->hw.fifos))->b_chans.rxbz_b2;
+ rxbz = &((union fifo_area *)(hc->hw.fifos))->b_chans.rxbz_b2;
+ txbz = &((union fifo_area *)(hc->hw.fifos))->b_chans.txbz_b2;
bdata = ((union fifo_area *)(hc->hw.fifos))->b_chans.rxdat_b2;
real_fifo = 1;
} else {
- bz = &((union fifo_area *)(hc->hw.fifos))->b_chans.rxbz_b1;
+ rxbz = &((union fifo_area *)(hc->hw.fifos))->b_chans.rxbz_b1;
+ txbz = &((union fifo_area *)(hc->hw.fifos))->b_chans.txbz_b1;
bdata = ((union fifo_area *)(hc->hw.fifos))->b_chans.rxdat_b1;
real_fifo = 0;
}
Begin:
count--;
- if (bz->f1 != bz->f2) {
+ if (rxbz->f1 != rxbz->f2) {
if (bch->debug & DEBUG_HW_BCHANNEL)
printk(KERN_DEBUG "hfcpci rec ch(%x) f1(%d) f2(%d)\n",
- bch->nr, bz->f1, bz->f2);
- zp = &bz->za[bz->f2];
+ bch->nr, rxbz->f1, rxbz->f2);
+ zp = &rxbz->za[rxbz->f2];
rcnt = le16_to_cpu(zp->z1) - le16_to_cpu(zp->z2);
if (rcnt < 0)
@@ -630,8 +643,8 @@ Begin:
"hfcpci rec ch(%x) z1(%x) z2(%x) cnt(%d)\n",
bch->nr, le16_to_cpu(zp->z1),
le16_to_cpu(zp->z2), rcnt);
- hfcpci_empty_bfifo(bch, bz, bdata, rcnt);
- rcnt = bz->f1 - bz->f2;
+ hfcpci_empty_bfifo(bch, rxbz, bdata, rcnt);
+ rcnt = rxbz->f1 - rxbz->f2;
if (rcnt < 0)
rcnt += MAX_B_FRAMES + 1;
if (hc->hw.last_bfifo_cnt[real_fifo] > rcnt + 1) {
@@ -644,7 +657,7 @@ Begin:
else
receive = 0;
} else if (test_bit(FLG_TRANSPARENT, &bch->Flags)) {
- hfcpci_empty_fifo_trans(bch, bz, bdata);
+ hfcpci_empty_fifo_trans(bch, rxbz, txbz, bdata);
return;
} else
receive = 0;
@@ -954,6 +967,7 @@ static void
ph_state_nt(struct dchannel *dch)
{
struct hfc_pci *hc = dch->hw;
+ u_char val;
if (dch->debug)
printk(KERN_DEBUG "%s: NT newstate %x\n",
@@ -967,7 +981,7 @@ ph_state_nt(struct dchannel *dch)
hc->hw.int_m1 &= ~HFCPCI_INTS_TIMER;
Write_hfc(hc, HFCPCI_INT_M1, hc->hw.int_m1);
/* Clear already pending ints */
- if (Read_hfc(hc, HFCPCI_INT_S1));
+ val = Read_hfc(hc, HFCPCI_INT_S1);
Write_hfc(hc, HFCPCI_STATES, 4 | HFCPCI_LOAD_STATE);
udelay(10);
Write_hfc(hc, HFCPCI_STATES, 4);
@@ -1256,8 +1270,7 @@ mode_hfcpci(struct bchannel *bch, int bc, int protocol)
rx_slot = (bc>>8) & 0xff;
tx_slot = (bc>>16) & 0xff;
bc = bc & 0xff;
- } else if (test_bit(HFC_CFG_PCM, &hc->cfg) &&
- (protocol > ISDN_P_NONE))
+ } else if (test_bit(HFC_CFG_PCM, &hc->cfg) && (protocol > ISDN_P_NONE))
printk(KERN_WARNING "%s: no pcm channel id but HFC_CFG_PCM\n",
__func__);
if (hc->chanlimit > 1) {
@@ -1315,8 +1328,8 @@ mode_hfcpci(struct bchannel *bch, int bc, int protocol)
case (ISDN_P_B_RAW):
bch->state = protocol;
bch->nr = bc;
- hfcpci_clear_fifo_rx(hc, (fifo2 & 2)?1:0);
- hfcpci_clear_fifo_tx(hc, (fifo2 & 2)?1:0);
+ hfcpci_clear_fifo_rx(hc, (fifo2 & 2) ? 1 : 0);
+ hfcpci_clear_fifo_tx(hc, (fifo2 & 2) ? 1 : 0);
if (bc & 2) {
hc->hw.sctrl |= SCTRL_B2_ENA;
hc->hw.sctrl_r |= SCTRL_B2_ENA;
@@ -1350,8 +1363,8 @@ mode_hfcpci(struct bchannel *bch, int bc, int protocol)
case (ISDN_P_B_HDLC):
bch->state = protocol;
bch->nr = bc;
- hfcpci_clear_fifo_rx(hc, (fifo2 & 2)?1:0);
- hfcpci_clear_fifo_tx(hc, (fifo2 & 2)?1:0);
+ hfcpci_clear_fifo_rx(hc, (fifo2 & 2) ? 1 : 0);
+ hfcpci_clear_fifo_tx(hc, (fifo2 & 2) ? 1 : 0);
if (bc & 2) {
hc->hw.sctrl |= SCTRL_B2_ENA;
hc->hw.sctrl_r |= SCTRL_B2_ENA;
@@ -1445,7 +1458,7 @@ set_hfcpci_rxtest(struct bchannel *bch, int protocol, int chan)
switch (protocol) {
case (ISDN_P_B_RAW):
bch->state = protocol;
- hfcpci_clear_fifo_rx(hc, (chan & 2)?1:0);
+ hfcpci_clear_fifo_rx(hc, (chan & 2) ? 1 : 0);
if (chan & 2) {
hc->hw.sctrl_r |= SCTRL_B2_ENA;
hc->hw.fifo_en |= HFCPCI_FIFOEN_B2RX;
@@ -1470,7 +1483,7 @@ set_hfcpci_rxtest(struct bchannel *bch, int protocol, int chan)
break;
case (ISDN_P_B_HDLC):
bch->state = protocol;
- hfcpci_clear_fifo_rx(hc, (chan & 2)?1:0);
+ hfcpci_clear_fifo_rx(hc, (chan & 2) ? 1 : 0);
if (chan & 2) {
hc->hw.sctrl_r |= SCTRL_B2_ENA;
hc->hw.last_bfifo_cnt[1] = 0;
@@ -1793,10 +1806,9 @@ init_card(struct hfc_pci *hc)
printk(KERN_WARNING
"HFC PCI: IRQ(%d) getting no interrupts "
"during init %d\n", hc->irq, 4 - cnt);
- if (cnt == 1) {
- spin_unlock_irqrestore(&hc->lock, flags);
- return -EIO;
- } else {
+ if (cnt == 1)
+ break;
+ else {
reset_hfcpci(hc);
cnt--;
}
@@ -2035,7 +2047,8 @@ setup_hw(struct hfc_pci *hc)
printk(KERN_WARNING "HFC-PCI: No IRQ for PCI card found\n");
return 1;
}
- hc->hw.pci_io = (char __iomem *)(unsigned long)hc->pdev->resource[1].start;
+ hc->hw.pci_io =
+ (char __iomem *)(unsigned long)hc->pdev->resource[1].start;
if (!hc->hw.pci_io) {
printk(KERN_WARNING "HFC-PCI: No IO-Mem for PCI card found\n");
@@ -2277,7 +2290,7 @@ hfc_remove_pci(struct pci_dev *pdev)
release_card(card);
else
if (debug)
- printk(KERN_WARNING "%s: drvdata already removed\n",
+ printk(KERN_DEBUG "%s: drvdata already removed\n",
__func__);
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-31 19:35:15 +0000