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path: root/drivers/isdn/hisax/jade_irq.c
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Diffstat (limited to 'drivers/isdn/hisax/jade_irq.c')
-rw-r--r--drivers/isdn/hisax/jade_irq.c238
1 files changed, 0 insertions, 238 deletions
diff --git a/drivers/isdn/hisax/jade_irq.c b/drivers/isdn/hisax/jade_irq.c
deleted file mode 100644
index a89e2df911c5..000000000000
--- a/drivers/isdn/hisax/jade_irq.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/* $Id: jade_irq.c,v 1.7.2.4 2004/02/11 13:21:34 keil Exp $
- *
- * Low level JADE IRQ stuff (derived from original hscx_irq.c)
- *
- * Author Roland Klabunde
- * Copyright by Roland Klabunde <R.Klabunde@Berkom.de>
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- */
-
-static inline void
-waitforCEC(struct IsdnCardState *cs, int jade, int reg)
-{
- int to = 50;
- int mask = (reg == jade_HDLC_XCMD ? jadeSTAR_XCEC : jadeSTAR_RCEC);
- while ((READJADE(cs, jade, jade_HDLC_STAR) & mask) && to) {
- udelay(1);
- to--;
- }
- if (!to)
- printk(KERN_WARNING "HiSax: waitforCEC (jade) timeout\n");
-}
-
-
-static inline void
-waitforXFW(struct IsdnCardState *cs, int jade)
-{
- /* Does not work on older jade versions, don't care */
-}
-
-static inline void
-WriteJADECMDR(struct IsdnCardState *cs, int jade, int reg, u_char data)
-{
- waitforCEC(cs, jade, reg);
- WRITEJADE(cs, jade, reg, data);
-}
-
-
-
-static void
-jade_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, "jade_empty_fifo");
-
- if (bcs->hw.hscx.rcvidx + count > HSCX_BUFMAX) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "jade_empty_fifo: incoming packet too large");
- WriteJADECMDR(cs, bcs->hw.hscx.hscx, jade_HDLC_RCMD, jadeRCMD_RMC);
- bcs->hw.hscx.rcvidx = 0;
- return;
- }
- ptr = bcs->hw.hscx.rcvbuf + bcs->hw.hscx.rcvidx;
- bcs->hw.hscx.rcvidx += count;
- READJADEFIFO(cs, bcs->hw.hscx.hscx, ptr, count);
- WriteJADECMDR(cs, bcs->hw.hscx.hscx, jade_HDLC_RCMD, jadeRCMD_RMC);
- if (cs->debug & L1_DEB_HSCX_FIFO) {
- char *t = bcs->blog;
-
- t += sprintf(t, "jade_empty_fifo %c cnt %d",
- bcs->hw.hscx.hscx ? 'B' : 'A', count);
- QuickHex(t, ptr, count);
- debugl1(cs, "%s", bcs->blog);
- }
-}
-
-static void
-jade_fill_fifo(struct BCState *bcs)
-{
- struct IsdnCardState *cs = bcs->cs;
- int more, count;
- int fifo_size = 32;
- u_char *ptr;
-
- if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
- debugl1(cs, "jade_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;
- WRITEJADEFIFO(cs, bcs->hw.hscx.hscx, ptr, count);
- WriteJADECMDR(cs, bcs->hw.hscx.hscx, jade_HDLC_XCMD, more ? jadeXCMD_XF : (jadeXCMD_XF | jadeXCMD_XME));
- if (cs->debug & L1_DEB_HSCX_FIFO) {
- char *t = bcs->blog;
-
- t += sprintf(t, "jade_fill_fifo %c cnt %d",
- bcs->hw.hscx.hscx ? 'B' : 'A', count);
- QuickHex(t, ptr, count);
- debugl1(cs, "%s", bcs->blog);
- }
-}
-
-
-static void
-jade_interrupt(struct IsdnCardState *cs, u_char val, u_char jade)
-{
- u_char r;
- struct BCState *bcs = cs->bcs + jade;
- struct sk_buff *skb;
- int fifo_size = 32;
- int count;
- int i_jade = (int) jade; /* To satisfy the compiler */
-
- if (!test_bit(BC_FLG_INIT, &bcs->Flag))
- return;
-
- if (val & 0x80) { /* RME */
- r = READJADE(cs, i_jade, jade_HDLC_RSTA);
- if ((r & 0xf0) != 0xa0) {
- if (!(r & 0x80))
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "JADE %s invalid frame", (jade ? "B" : "A"));
- if ((r & 0x40) && bcs->mode)
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "JADE %c RDO mode=%d", 'A' + jade, bcs->mode);
- if (!(r & 0x20))
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "JADE %c CRC error", 'A' + jade);
- WriteJADECMDR(cs, jade, jade_HDLC_RCMD, jadeRCMD_RMC);
- } else {
- count = READJADE(cs, i_jade, jade_HDLC_RBCL) & 0x1F;
- if (count == 0)
- count = fifo_size;
- jade_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 "JADE %s receive out of memory\n", (jade ? "B" : "A"));
- 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 */
- jade_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) {
- jade_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);
- jade_fill_fifo(bcs);
- } else {
- test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
- schedule_event(bcs, B_XMTBUFREADY);
- }
- }
-}
-
-static inline void
-jade_int_main(struct IsdnCardState *cs, u_char val, int jade)
-{
- struct BCState *bcs;
- bcs = cs->bcs + jade;
-
- if (val & jadeISR_RFO) {
- /* handled with RDO */
- val &= ~jadeISR_RFO;
- }
- if (val & jadeISR_XDU) {
- /* relevant in HDLC mode only */
- /* don't reset XPR here */
- if (bcs->mode == 1)
- jade_fill_fifo(bcs);
- else {
- /* 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;
- }
- WriteJADECMDR(cs, bcs->hw.hscx.hscx, jade_HDLC_XCMD, jadeXCMD_XRES);
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "JADE %c EXIR %x Lost TX", 'A' + jade, val);
- }
- }
- if (val & (jadeISR_RME | jadeISR_RPF | jadeISR_XPR)) {
- if (cs->debug & L1_DEB_HSCX)
- debugl1(cs, "JADE %c interrupt %x", 'A' + jade, val);
- jade_interrupt(cs, val, jade);
- }
-}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.