hfcpci.c (8bfddfbe2100862fd39b97001d0559ccd4c77f19) hfcpci.c (7206e659f689558b41aa058c3040b081cb281d03)
1/*
2 *
3 * hfcpci.c low level driver for CCD's hfc-pci based cards
4 *
5 * Author Werner Cornelius (werner@isdn4linux.de)
6 * based on existing driver for CCD hfc ISA cards
7 * type approval valid for HFC-S PCI A based card
8 *

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572
573 fcnt_tx = le16_to_cpu(*z2t) - le16_to_cpu(*z1t);
574 if (fcnt_tx <= 0)
575 fcnt_tx += B_FIFO_SIZE;
576 /* fcnt_tx contains available bytes in tx-fifo */
577 fcnt_tx = B_FIFO_SIZE - fcnt_tx;
578 /* remaining bytes to send (bytes in tx-fifo) */
579
1/*
2 *
3 * hfcpci.c low level driver for CCD's hfc-pci based cards
4 *
5 * Author Werner Cornelius (werner@isdn4linux.de)
6 * based on existing driver for CCD hfc ISA cards
7 * type approval valid for HFC-S PCI A based card
8 *

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572
573 fcnt_tx = le16_to_cpu(*z2t) - le16_to_cpu(*z1t);
574 if (fcnt_tx <= 0)
575 fcnt_tx += B_FIFO_SIZE;
576 /* fcnt_tx contains available bytes in tx-fifo */
577 fcnt_tx = B_FIFO_SIZE - fcnt_tx;
578 /* remaining bytes to send (bytes in tx-fifo) */
579
580 bch->rx_skb = mI_alloc_skb(fcnt_rx, GFP_ATOMIC);
581 if (bch->rx_skb) {
580 maxlen = bchannel_get_rxbuf(bch, fcnt_rx);
581 if (maxlen < 0) {
582 pr_warning("B%d: No bufferspace for %d bytes\n",
583 bch->nr, fcnt_rx);
584 } else {
582 ptr = skb_put(bch->rx_skb, fcnt_rx);
583 if (le16_to_cpu(*z2r) + fcnt_rx <= B_FIFO_SIZE + B_SUB_VAL)
584 maxlen = fcnt_rx; /* complete transfer */
585 else
586 maxlen = B_FIFO_SIZE + B_SUB_VAL - le16_to_cpu(*z2r);
587 /* maximum */
588
589 ptr1 = bdata + (le16_to_cpu(*z2r) - B_SUB_VAL);
590 /* start of data */
591 memcpy(ptr, ptr1, maxlen); /* copy data */
592 fcnt_rx -= maxlen;
593
594 if (fcnt_rx) { /* rest remaining */
595 ptr += maxlen;
596 ptr1 = bdata; /* start of buffer */
597 memcpy(ptr, ptr1, fcnt_rx); /* rest */
598 }
599 recv_Bchannel(bch, fcnt_tx); /* bch, id */
585 ptr = skb_put(bch->rx_skb, fcnt_rx);
586 if (le16_to_cpu(*z2r) + fcnt_rx <= B_FIFO_SIZE + B_SUB_VAL)
587 maxlen = fcnt_rx; /* complete transfer */
588 else
589 maxlen = B_FIFO_SIZE + B_SUB_VAL - le16_to_cpu(*z2r);
590 /* maximum */
591
592 ptr1 = bdata + (le16_to_cpu(*z2r) - B_SUB_VAL);
593 /* start of data */
594 memcpy(ptr, ptr1, maxlen); /* copy data */
595 fcnt_rx -= maxlen;
596
597 if (fcnt_rx) { /* rest remaining */
598 ptr += maxlen;
599 ptr1 = bdata; /* start of buffer */
600 memcpy(ptr, ptr1, fcnt_rx); /* rest */
601 }
602 recv_Bchannel(bch, fcnt_tx); /* bch, id */
600 } else
601 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
602
603 }
603 *z2r = cpu_to_le16(new_z2); /* new position */
604}
605
606/*
607 * B-channel main receive routine
608 */
609static void
610main_rec_hfcpci(struct bchannel *bch)

--- 1768 unchanged lines hidden --- 		604 *z2r = cpu_to_le16(new_z2); /* new position */
605}
606
607/*
608 * B-channel main receive routine
609 */
610static void
611main_rec_hfcpci(struct bchannel *bch)

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