Lines Matching refs:scq
27 * 2 - Per SCQ scq spinlock
115 #define scq_virt_to_bus(scq, p) \
116 (scq->dma + ((unsigned long)(p) - (unsigned long)(scq)->org))
126 static void free_scq(ns_dev *card, scq_info * scq, struct atm_vcc *vcc);
134 static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd,
137 static void drain_scq(ns_dev * card, scq_info * scq, int pos);
247 free_scq(card, card->scd2vc[j]->scq, card->scd2vc[j]->tx_vcc);
863 scq_info *scq;
868 scq = kmalloc(sizeof(*scq), GFP_KERNEL);
869 if (!scq)
871 scq->org = dma_alloc_coherent(&card->pcidev->dev,
872 2 * size, &scq->dma, GFP_KERNEL);
873 if (!scq->org) {
874 kfree(scq);
877 scq->skb = kcalloc(size / NS_SCQE_SIZE, sizeof(*scq->skb),
879 if (!scq->skb) {
881 2 * size, scq->org, scq->dma);
882 kfree(scq);
885 scq->num_entries = size / NS_SCQE_SIZE;
886 scq->base = PTR_ALIGN(scq->org, size);
887 scq->next = scq->base;
888 scq->last = scq->base + (scq->num_entries - 1);
889 scq->tail = scq->last;
890 scq->scd = scd;
891 scq->tbd_count = 0;
892 init_waitqueue_head(&scq->scqfull_waitq);
893 scq->full = 0;
894 spin_lock_init(&scq->lock);
896 return scq;
900 static void free_scq(ns_dev *card, scq_info *scq, struct atm_vcc *vcc)
904 if (scq->num_entries == VBR_SCQ_NUM_ENTRIES)
905 for (i = 0; i < scq->num_entries; i++) {
906 if (scq->skb[i] != NULL) {
907 vcc = ATM_SKB(scq->skb[i])->vcc;
909 vcc->pop(vcc, scq->skb[i]);
911 dev_kfree_skb_any(scq->skb[i]);
917 ("nicstar: free_scq() called with vcc == NULL for fixed rate scq.");
918 for (i = 0; i < scq->num_entries; i++)
919 dev_kfree_skb_any(scq->skb[i]);
921 for (i = 0; i < scq->num_entries; i++) {
922 if (scq->skb[i] != NULL) {
924 vcc->pop(vcc, scq->skb[i]);
926 dev_kfree_skb_any(scq->skb[i]);
930 kfree(scq->skb);
932 2 * (scq->num_entries == VBR_SCQ_NUM_ENTRIES ?
934 scq->org, scq->dma);
935 kfree(scq);
1271 scq_info *scq;
1353 scq = get_scq(card, CBR_SCQSIZE, vc->cbr_scd);
1354 if (scq == NULL) {
1363 vc->scq = scq;
1364 u32d[0] = scq_virt_to_bus(scq, scq->base);
1373 vc->scq = card->scq0;
1465 scq_info *scq;
1467 scq = vc->scq;
1470 spin_lock_irqsave(&scq->lock, flags);
1471 scqep = scq->next;
1472 if (scqep == scq->base)
1473 scqep = scq->last;
1476 if (scqep == scq->tail) {
1477 spin_unlock_irqrestore(&scq->lock, flags);
1482 if (!ns_scqe_is_tsr(scqep) && scq->tail != scq->next) {
1490 scqi = scq->next - scq->base;
1494 *scq->next = tsr;
1496 scq->skb[index] = NULL;
1497 if (scq->next == scq->last)
1498 scq->next = scq->base;
1500 scq->next++;
1501 data = scq_virt_to_bus(scq, scq->next);
1502 ns_write_sram(card, scq->scd, &data, 1);
1504 spin_unlock_irqrestore(&scq->lock, flags);
1520 free_scq(card, vc->scq, vcc);
1526 scq_info *scq = card->scq0;
1528 spin_lock_irqsave(&scq->lock, flags);
1530 for (i = 0; i < scq->num_entries; i++) {
1531 if (scq->skb[i] && ATM_SKB(scq->skb[i])->vcc == vcc) {
1532 ATM_SKB(scq->skb[i])->vcc = NULL;
1533 atm_return(vcc, scq->skb[i]->truesize);
1539 spin_unlock_irqrestore(&scq->lock, flags);
1625 scq_info *scq;
1698 scq = ((vc_map *) vcc->dev_data)->scq;
1702 scq = card->scq0;
1705 if (push_scqe(card, vc, scq, &scqe, skb, may_sleep) != 0) {
1727 static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd,
1737 spin_lock_irqsave(&scq->lock, flags);
1738 while (scq->tail == scq->next) {
1740 spin_unlock_irqrestore(&scq->lock, flags);
1745 scq->full = 1;
1746 wait_event_interruptible_lock_irq_timeout(scq->scqfull_waitq,
1747 scq->tail != scq->next,
1748 scq->lock,
1751 if (scq->full) {
1752 spin_unlock_irqrestore(&scq->lock, flags);
1758 *scq->next = *tbd;
1759 index = (int)(scq->next - scq->base);
1760 scq->skb[index] = skb;
1766 scq->next);
1767 if (scq->next == scq->last)
1768 scq->next = scq->base;
1770 scq->next++;
1773 if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) {
1774 scq->tbd_count++;
1780 || scq->tbd_count >= MAX_TBD_PER_SCQ) {
1783 while (scq->tail == scq->next) {
1785 data = scq_virt_to_bus(scq, scq->next);
1786 ns_write_sram(card, scq->scd, &data, 1);
1787 spin_unlock_irqrestore(&scq->lock, flags);
1793 scq->full = 1;
1796 wait_event_interruptible_lock_irq_timeout(scq->scqfull_waitq,
1797 scq->tail != scq->next,
1798 scq->lock,
1802 if (!scq->full) {
1808 scqi = scq->next - scq->base;
1813 *scq->next = tsr;
1815 scq->skb[index] = NULL;
1820 le32_to_cpu(tsr.word_4), scq->next);
1821 if (scq->next == scq->last)
1822 scq->next = scq->base;
1824 scq->next++;
1826 scq->tbd_count = 0;
1831 data = scq_virt_to_bus(scq, scq->next);
1832 ns_write_sram(card, scq->scd, &data, 1);
1834 spin_unlock_irqrestore(&scq->lock, flags);
1842 scq_info *scq;
1875 scq = card->scq0;
1884 scq = card->scd2vc[scdi]->scq;
1886 drain_scq(card, scq, ns_tsi_getscqpos(card->tsq.next));
1887 scq->full = 0;
1888 wake_up_interruptible(&(scq->scqfull_waitq));
1914 static void drain_scq(ns_dev * card, scq_info * scq, int pos)
1921 XPRINTK("nicstar%d: drain_scq() called, scq at 0x%p, pos %d.\n",
1922 card->index, scq, pos);
1923 if (pos >= scq->num_entries) {
1928 spin_lock_irqsave(&scq->lock, flags);
1929 i = (int)(scq->tail - scq->base);
1930 if (++i == scq->num_entries)
1933 skb = scq->skb[i];
1947 scq->skb[i] = NULL;
1949 if (++i == scq->num_entries)
1952 scq->tail = scq->base + pos;
1953 spin_unlock_irqrestore(&scq->lock, flags);