summaryrefslogtreecommitdiffstats
path: root/drivers/isdn/hisax/hscx_irq.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/isdn/hisax/hscx_irq.c')
-rw-r--r--drivers/isdn/hisax/hscx_irq.c294
1 files changed, 0 insertions, 294 deletions
diff --git a/drivers/isdn/hisax/hscx_irq.c b/drivers/isdn/hisax/hscx_irq.c
deleted file mode 100644
index 0d7e783c8bef..000000000000
--- a/drivers/isdn/hisax/hscx_irq.c
+++ /dev/null
@@ -1,294 +0,0 @@
-/* $Id: hscx_irq.c,v 1.18.2.3 2004/02/11 13:21:34 keil Exp $
- *
- * low level b-channel stuff for Siemens HSCX
- *
- * Author Karsten Keil
- * Copyright by Karsten Keil <keil@isdn4linux.de>
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- * This is an include file for fast inline IRQ stuff
- *
- */
-
-
-static inline void
-waitforCEC(struct IsdnCardState *cs, int hscx)
-{
- int to = 50;
-
- while ((READHSCX(cs, hscx, HSCX_STAR) & 0x04) && to) {
- udelay(1);
- to--;
- }
- if (!to)
- printk(KERN_WARNING "HiSax: waitforCEC timeout\n");
-}
-
-
-static inline void
-waitforXFW(struct IsdnCardState *cs, int hscx)
-{
- int to = 50;
-
- while (((READHSCX(cs, hscx, HSCX_STAR) & 0x44) != 0x40) && to) {
- udelay(1);
- to--;
- }
- if (!to)
- printk(KERN_WARNING "HiSax: waitforXFW timeout\n");
-}
-
-static inline void
-WriteHSCXCMDR(struct IsdnCardState *cs, int hscx, u_char data)
-{
- waitforCEC(cs, hscx);
- WRITEHSCX(cs, hscx, HSCX_CMDR, data);
-}
-
-
-
-static void
-hscx_empty_fifo(struct BCState *bcs, int count)
-{
- u_char *ptr;
- struct IsdnCardState *cs = bcs->cs;
-
- if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
- debugl1(cs, "hscx_empty_fifo");
-
- if (bcs->hw.hscx.rcvidx + count > HSCX_BUFMAX) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "hscx_empty_fifo: incoming packet too large");
- WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x80);
- bcs->hw.hscx.rcvidx = 0;
- return;
- }
- ptr = bcs->hw.hscx.rcvbuf + bcs->hw.hscx.rcvidx;
- bcs->hw.hscx.rcvidx += count;
- READHSCXFIFO(cs, bcs->hw.hscx.hscx, ptr, count);
- WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x80);
- if (cs->debug & L1_DEB_HSCX_FIFO) {
- char *t = bcs->blog;
-
- t += sprintf(t, "hscx_empty_fifo %c cnt %d",
- bcs->hw.hscx.hscx ? 'B' : 'A', count);
- QuickHex(t, ptr, count);
- debugl1(cs, "%s", bcs->blog);
- }
-}
-
-static void
-hscx_fill_fifo(struct BCState *bcs)
-{
- struct IsdnCardState *cs = bcs->cs;
- int more, count;
- int fifo_size = test_bit(HW_IPAC, &cs->HW_Flags) ? 64 : 32;
- u_char *ptr;
-
- if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
- debugl1(cs, "hscx_fill_fifo");
-
- if (!bcs->tx_skb)
- return;
- if (bcs->tx_skb->len <= 0)
- return;
-
- more = (bcs->mode == L1_MODE_TRANS) ? 1 : 0;
- if (bcs->tx_skb->len > fifo_size) {
- more = !0;
- count = fifo_size;
- } else
- count = bcs->tx_skb->len;
-
- waitforXFW(cs, bcs->hw.hscx.hscx);
- ptr = bcs->tx_skb->data;
- skb_pull(bcs->tx_skb, count);
- bcs->tx_cnt -= count;
- bcs->hw.hscx.count += count;
- WRITEHSCXFIFO(cs, bcs->hw.hscx.hscx, ptr, count);
- WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, more ? 0x8 : 0xa);
- if (cs->debug & L1_DEB_HSCX_FIFO) {
- char *t = bcs->blog;
-
- t += sprintf(t, "hscx_fill_fifo %c cnt %d",
- bcs->hw.hscx.hscx ? 'B' : 'A', count);
- QuickHex(t, ptr, count);
- debugl1(cs, "%s", bcs->blog);
- }
-}
-
-static void
-hscx_interrupt(struct IsdnCardState *cs, u_char val, u_char hscx)
-{
- u_char r;
- struct BCState *bcs = cs->bcs + hscx;
- struct sk_buff *skb;
- int fifo_size = test_bit(HW_IPAC, &cs->HW_Flags) ? 64 : 32;
- int count;
-
- if (!test_bit(BC_FLG_INIT, &bcs->Flag))
- return;
-
- if (val & 0x80) { /* RME */
- r = READHSCX(cs, hscx, HSCX_RSTA);
- if ((r & 0xf0) != 0xa0) {
- if (!(r & 0x80)) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "HSCX invalid frame");
-#ifdef ERROR_STATISTIC
- bcs->err_inv++;
-#endif
- }
- if ((r & 0x40) && bcs->mode) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "HSCX RDO mode=%d",
- bcs->mode);
-#ifdef ERROR_STATISTIC
- bcs->err_rdo++;
-#endif
- }
- if (!(r & 0x20)) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "HSCX CRC error");
-#ifdef ERROR_STATISTIC
- bcs->err_crc++;
-#endif
- }
- WriteHSCXCMDR(cs, hscx, 0x80);
- } else {
- count = READHSCX(cs, hscx, HSCX_RBCL) & (
- test_bit(HW_IPAC, &cs->HW_Flags) ? 0x3f : 0x1f);
- if (count == 0)
- count = fifo_size;
- hscx_empty_fifo(bcs, count);
- if ((count = bcs->hw.hscx.rcvidx - 1) > 0) {
- if (cs->debug & L1_DEB_HSCX_FIFO)
- debugl1(cs, "HX Frame %d", count);
- if (!(skb = dev_alloc_skb(count)))
- printk(KERN_WARNING "HSCX: receive out of memory\n");
- else {
- skb_put_data(skb, bcs->hw.hscx.rcvbuf,
- count);
- skb_queue_tail(&bcs->rqueue, skb);
- }
- }
- }
- bcs->hw.hscx.rcvidx = 0;
- schedule_event(bcs, B_RCVBUFREADY);
- }
- if (val & 0x40) { /* RPF */
- hscx_empty_fifo(bcs, fifo_size);
- if (bcs->mode == L1_MODE_TRANS) {
- /* receive audio data */
- if (!(skb = dev_alloc_skb(fifo_size)))
- printk(KERN_WARNING "HiSax: receive out of memory\n");
- else {
- skb_put_data(skb, bcs->hw.hscx.rcvbuf,
- fifo_size);
- skb_queue_tail(&bcs->rqueue, skb);
- }
- bcs->hw.hscx.rcvidx = 0;
- schedule_event(bcs, B_RCVBUFREADY);
- }
- }
- if (val & 0x10) { /* XPR */
- if (bcs->tx_skb) {
- if (bcs->tx_skb->len) {
- hscx_fill_fifo(bcs);
- return;
- } else {
- 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->hw.hscx.count;
- spin_unlock_irqrestore(&bcs->aclock, flags);
- schedule_event(bcs, B_ACKPENDING);
- }
- dev_kfree_skb_irq(bcs->tx_skb);
- bcs->hw.hscx.count = 0;
- bcs->tx_skb = NULL;
- }
- }
- if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
- bcs->hw.hscx.count = 0;
- test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
- hscx_fill_fifo(bcs);
- } else {
- test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
- schedule_event(bcs, B_XMTBUFREADY);
- }
- }
-}
-
-static void
-hscx_int_main(struct IsdnCardState *cs, u_char val)
-{
-
- u_char exval;
- struct BCState *bcs;
-
- if (val & 0x01) {
- bcs = cs->bcs + 1;
- exval = READHSCX(cs, 1, HSCX_EXIR);
- if (exval & 0x40) {
- if (bcs->mode == 1)
- hscx_fill_fifo(bcs);
- else {
-#ifdef ERROR_STATISTIC
- bcs->err_tx++;
-#endif
- /* Here we lost an TX interrupt, so
- * restart transmitting the whole frame.
- */
- if (bcs->tx_skb) {
- skb_push(bcs->tx_skb, bcs->hw.hscx.count);
- bcs->tx_cnt += bcs->hw.hscx.count;
- bcs->hw.hscx.count = 0;
- }
- WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x01);
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "HSCX B EXIR %x Lost TX", exval);
- }
- } else if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "HSCX B EXIR %x", exval);
- }
- if (val & 0xf8) {
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "HSCX B interrupt %x", val);
- hscx_interrupt(cs, val, 1);
- }
- if (val & 0x02) {
- bcs = cs->bcs;
- exval = READHSCX(cs, 0, HSCX_EXIR);
- if (exval & 0x40) {
- if (bcs->mode == L1_MODE_TRANS)
- hscx_fill_fifo(bcs);
- else {
- /* Here we lost an TX interrupt, so
- * restart transmitting the whole frame.
- */
-#ifdef ERROR_STATISTIC
- bcs->err_tx++;
-#endif
- if (bcs->tx_skb) {
- skb_push(bcs->tx_skb, bcs->hw.hscx.count);
- bcs->tx_cnt += bcs->hw.hscx.count;
- bcs->hw.hscx.count = 0;
- }
- WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x01);
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "HSCX A EXIR %x Lost TX", exval);
- }
- } else if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "HSCX A EXIR %x", exval);
- }
- if (val & 0x04) {
- exval = READHSCX(cs, 0, HSCX_ISTA);
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "HSCX A interrupt %x", exval);
- hscx_interrupt(cs, exval, 0);
- }
-}
OpenPOWER on IntegriCloud