/* $Id: isac.c,v 1.31.2.3 2004/01/13 14:31:25 keil Exp $ * * ISAC specific routines * * Author Karsten Keil * Copyright by Karsten Keil * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * * For changes and modifications please read * Documentation/isdn/HiSax.cert * */ #include "hisax.h" #include "isac.h" #include "arcofi.h" #include "isdnl1.h" #include #include #include #define DBUSY_TIMER_VALUE 80 #define ARCOFI_USE 1 static char *ISACVer[] = {"2086/2186 V1.1", "2085 B1", "2085 B2", "2085 V2.3"}; void ISACVersion(struct IsdnCardState *cs, char *s) { int val; val = cs->readisac(cs, ISAC_RBCH); printk(KERN_INFO "%s ISAC version (%x): %s\n", s, val, ISACVer[(val >> 5) & 3]); } static void ph_command(struct IsdnCardState *cs, unsigned int command) { if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ph_command %x", command); cs->writeisac(cs, ISAC_CIX0, (command << 2) | 3); } static void isac_new_ph(struct IsdnCardState *cs) { switch (cs->dc.isac.ph_state) { case (ISAC_IND_RS): case (ISAC_IND_EI): ph_command(cs, ISAC_CMD_DUI); l1_msg(cs, HW_RESET | INDICATION, NULL); break; case (ISAC_IND_DID): l1_msg(cs, HW_DEACTIVATE | CONFIRM, NULL); break; case (ISAC_IND_DR): l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL); break; case (ISAC_IND_PU): l1_msg(cs, HW_POWERUP | CONFIRM, NULL); break; case (ISAC_IND_RSY): l1_msg(cs, HW_RSYNC | INDICATION, NULL); break; case (ISAC_IND_ARD): l1_msg(cs, HW_INFO2 | INDICATION, NULL); break; case (ISAC_IND_AI8): l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL); break; case (ISAC_IND_AI10): l1_msg(cs, HW_INFO4_P10 | INDICATION, NULL); break; default: break; } } static void isac_bh(struct work_struct *work) { struct IsdnCardState *cs = container_of(work, struct IsdnCardState, tqueue); struct PStack *stptr; if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) { if (cs->debug) debugl1(cs, "D-Channel Busy cleared"); stptr = cs->stlist; while (stptr != NULL) { stptr->l1.l1l2(stptr, PH_PAUSE | CONFIRM, NULL); stptr = stptr->next; } } if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) isac_new_ph(cs); if (test_and_clear_bit(D_RCVBUFREADY, &cs->event)) DChannel_proc_rcv(cs); if (test_and_clear_bit(D_XMTBUFREADY, &cs->event)) DChannel_proc_xmt(cs); #if ARCOFI_USE if (!test_bit(HW_ARCOFI, &cs->HW_Flags)) return; if (test_and_clear_bit(D_RX_MON1, &cs->event)) arcofi_fsm(cs, ARCOFI_RX_END, NULL); if (test_and_clear_bit(D_TX_MON1, &cs->event)) arcofi_fsm(cs, ARCOFI_TX_END, NULL); #endif } static void isac_empty_fifo(struct IsdnCardState *cs, int count) { u_char *ptr; if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO)) debugl1(cs, "isac_empty_fifo"); if ((cs->rcvidx + count) >= MAX_DFRAME_LEN_L1) { if (cs->debug & L1_DEB_WARN) debugl1(cs, "isac_empty_fifo overrun %d", cs->rcvidx + count); cs->writeisac(cs, ISAC_CMDR, 0x80); cs->rcvidx = 0; return; } ptr = cs->rcvbuf + cs->rcvidx; cs->rcvidx += count; cs->readisacfifo(cs, ptr, count); cs->writeisac(cs, ISAC_CMDR, 0x80); if (cs->debug & L1_DEB_ISAC_FIFO) { char *t = cs->dlog; t += sprintf(t, "isac_empty_fifo cnt %d", count); QuickHex(t, ptr, count); debugl1(cs, "%s", cs->dlog); } } static void isac_fill_fifo(struct IsdnCardState *cs) { int count, more; u_char *ptr; if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO)) debugl1(cs, "isac_fill_fifo"); if (!cs->tx_skb) return; count = cs->tx_skb->len; if (count <= 0) return; more = 0; if (count > 32) { more = !0; count = 32; } ptr = cs->tx_skb->data; skb_pull(cs->tx_skb, count); cs->tx_cnt += count; cs->writeisacfifo(cs, ptr, count); cs->writeisac(cs, ISAC_CMDR, more ? 0x8 : 0xa); if (test_and_set_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) { debugl1(cs, "isac_fill_fifo dbusytimer running"); del_timer(&cs->dbusytimer); } init_timer(&cs->dbusytimer); cs->dbusytimer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ)/1000); add_timer(&cs->dbusytimer); if (cs->debug & L1_DEB_ISAC_FIFO) { char *t = cs->dlog; t += sprintf(t, "isac_fill_fifo cnt %d", count); QuickHex(t, ptr, count); debugl1(cs, "%s", cs->dlog); } } void isac_interrupt(struct IsdnCardState *cs, u_char val) { u_char exval, v1; struct sk_buff *skb; unsigned int count; if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ISAC interrupt %x", val); if (val & 0x80) { /* RME */ exval = cs->readisac(cs, ISAC_RSTA); if ((exval & 0x70) != 0x20) { if (exval & 0x40) { if (cs->debug & L1_DEB_WARN) debugl1(cs, "ISAC RDO"); #ifdef ERROR_STATISTIC cs->err_rx++; #endif } if (!(exval & 0x20)) { if (cs->debug & L1_DEB_WARN) debugl1(cs, "ISAC CRC error"); #ifdef ERROR_STATISTIC cs->err_crc++; #endif } cs->writeisac(cs, ISAC_CMDR, 0x80); } else { count = cs->readisac(cs, ISAC_RBCL) & 0x1f; if (count == 0) count = 32; isac_empty_fifo(cs, count); count = cs->rcvidx; if (count > 0) { cs->rcvidx = 0; skb = alloc_skb(count, GFP_ATOMIC); if (!skb) printk(KERN_WARNING "HiSax: D receive out of memory\n"); else { skb_put_data(skb, cs->rcvbuf, count); skb_queue_tail(&cs->rq, skb); } } } cs->rcvidx = 0; schedule_event(cs, D_RCVBUFREADY); } if (val & 0x40) { /* RPF */ isac_empty_fifo(cs, 32); } if (val & 0x20) { /* RSC */ /* never */ if (cs->debug & L1_DEB_WARN) debugl1(cs, "ISAC RSC interrupt"); } if (val & 0x10) { /* XPR */ if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) del_timer(&cs->dbusytimer); if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags)) schedule_event(cs, D_CLEARBUSY); if (cs->tx_skb) { if (cs->tx_skb->len) { isac_fill_fifo(cs); goto afterXPR; } else { dev_kfree_skb_irq(cs->tx_skb); cs->tx_cnt = 0; cs->tx_skb = NULL; } } cs->tx_skb = skb_dequeue(&cs->sq); if (cs->tx_skb) { cs->tx_cnt = 0; isac_fill_fifo(cs); } else schedule_event(cs, D_XMTBUFREADY); } afterXPR: if (val & 0x04) { /* CISQ */ exval = cs->readisac(cs, ISAC_CIR0); if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ISAC CIR0 %02X", exval); if (exval & 2) { cs->dc.isac.ph_state = (exval >> 2) & 0xf; if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ph_state change %x", cs->dc.isac.ph_state); schedule_event(cs, D_L1STATECHANGE); } if (exval & 1) { exval = cs->readisac(cs, ISAC_CIR1); if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ISAC CIR1 %02X", exval); } } if (val & 0x02) { /* SIN */ /* never */ if (cs->debug & L1_DEB_WARN) debugl1(cs, "ISAC SIN interrupt"); } if (val & 0x01) { /* EXI */ exval = cs->readisac(cs, ISAC_EXIR); if (cs->debug & L1_DEB_WARN) debugl1(cs, "ISAC EXIR %02x", exval); if (exval & 0x80) { /* XMR */ debugl1(cs, "ISAC XMR"); printk(KERN_WARNING "HiSax: ISAC XMR\n"); } if (exval & 0x40) { /* XDU */ debugl1(cs, "ISAC XDU"); printk(KERN_WARNING "HiSax: ISAC XDU\n"); #ifdef ERROR_STATISTIC cs->err_tx++; #endif if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) del_timer(&cs->dbusytimer); if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags)) schedule_event(cs, D_CLEARBUSY); if (cs->tx_skb) { /* Restart frame */ skb_push(cs->tx_skb, cs->tx_cnt); cs->tx_cnt = 0; isac_fill_fifo(cs); } else { printk(KERN_WARNING "HiSax: ISAC XDU no skb\n"); debugl1(cs, "ISAC XDU no skb"); } } if (exval & 0x04) { /* MOS */ v1 = cs->readisac(cs, ISAC_MOSR); if (cs->debug & L1_DEB_MONITOR) debugl1(cs, "ISAC MOSR %02x", v1); #if ARCOFI_USE if (v1 & 0x08) { if (!cs->dc.isac.mon_rx) { cs->dc.isac.mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC); if (!cs->dc.isac.mon_rx) { if (cs->debug & L1_DEB_WARN) debugl1(cs, "ISAC MON RX out of memory!"); cs->dc.isac.mocr &= 0xf0; cs->dc.isac.mocr |= 0x0a; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); goto afterMONR0; } else cs->dc.isac.mon_rxp = 0; } if (cs->dc.isac.mon_rxp >= MAX_MON_FRAME) { cs->dc.isac.mocr &= 0xf0; cs->dc.isac.mocr |= 0x0a; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); cs->dc.isac.mon_rxp = 0; if (cs->debug & L1_DEB_WARN) debugl1(cs, "ISAC MON RX overflow!"); goto afterMONR0; } cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp++] = cs->readisac(cs, ISAC_MOR0); if (cs->debug & L1_DEB_MONITOR) debugl1(cs, "ISAC MOR0 %02x", cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp - 1]); if (cs->dc.isac.mon_rxp == 1) { cs->dc.isac.mocr |= 0x04; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); } } afterMONR0: if (v1 & 0x80) { if (!cs->dc.isac.mon_rx) { cs->dc.isac.mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC); if (!cs->dc.isac.mon_rx) { if (cs->debug & L1_DEB_WARN) debugl1(cs, "ISAC MON RX out of memory!"); cs->dc.isac.mocr &= 0x0f; cs->dc.isac.mocr |= 0xa0; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); goto afterMONR1; } else cs->dc.isac.mon_rxp = 0; } if (cs->dc.isac.mon_rxp >= MAX_MON_FRAME) { cs->dc.isac.mocr &= 0x0f; cs->dc.isac.mocr |= 0xa0; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); cs->dc.isac.mon_rxp = 0; if (cs->debug & L1_DEB_WARN) debugl1(cs, "ISAC MON RX overflow!"); goto afterMONR1; } cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp++] = cs->readisac(cs, ISAC_MOR1); if (cs->debug & L1_DEB_MONITOR) debugl1(cs, "ISAC MOR1 %02x", cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp - 1]); cs->dc.isac.mocr |= 0x40; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); } afterMONR1: if (v1 & 0x04) { cs->dc.isac.mocr &= 0xf0; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); cs->dc.isac.mocr |= 0x0a; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); schedule_event(cs, D_RX_MON0); } if (v1 & 0x40) { cs->dc.isac.mocr &= 0x0f; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); cs->dc.isac.mocr |= 0xa0; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); schedule_event(cs, D_RX_MON1); } if (v1 & 0x02) { if ((!cs->dc.isac.mon_tx) || (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc) && !(v1 & 0x08))) { cs->dc.isac.mocr &= 0xf0; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); cs->dc.isac.mocr |= 0x0a; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); if (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) schedule_event(cs, D_TX_MON0); goto AfterMOX0; } if (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) { schedule_event(cs, D_TX_MON0); goto AfterMOX0; } cs->writeisac(cs, ISAC_MOX0, cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]); if (cs->debug & L1_DEB_MONITOR) debugl1(cs, "ISAC %02x -> MOX0", cs->dc.isac.mon_tx[cs->dc.isac.mon_txp - 1]); } AfterMOX0: if (v1 & 0x20) { if ((!cs->dc.isac.mon_tx) || (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc) && !(v1 & 0x80))) { cs->dc.isac.mocr &= 0x0f; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); cs->dc.isac.mocr |= 0xa0; cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); if (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) schedule_event(cs, D_TX_MON1); goto AfterMOX1; } if (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) { schedule_event(cs, D_TX_MON1); goto AfterMOX1; } cs->writeisac(cs, ISAC_MOX1, cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]); if (cs->debug & L1_DEB_MONITOR) debugl1(cs, "ISAC %02x -> MOX1", cs->dc.isac.mon_tx[cs->dc.isac.mon_txp - 1]); } AfterMOX1:; #endif } } } static void ISAC_l1hw(struct PStack *st, int pr, void *arg) { struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware; struct sk_buff *skb = arg; u_long flags; int val; switch (pr) { case (PH_DATA | REQUEST): if (cs->debug & DEB_DLOG_HEX) LogFrame(cs, skb->data, skb->len); if (cs->debug & DEB_DLOG_VERBOSE) dlogframe(cs, skb, 0); spin_lock_irqsave(&cs->lock, flags); if (cs->tx_skb) { skb_queue_tail(&cs->sq, skb); #ifdef L2FRAME_DEBUG /* psa */ if (cs->debug & L1_DEB_LAPD) Logl2Frame(cs, skb, "PH_DATA Queued", 0); #endif } else { cs->tx_skb = skb; cs->tx_cnt = 0; #ifdef L2FRAME_DEBUG /* psa */ if (cs->debug & L1_DEB_LAPD) Logl2Frame(cs, skb, "PH_DATA", 0); #endif isac_fill_fifo(cs); } spin_unlock_irqrestore(&cs->lock, flags); break; case (PH_PULL | INDICATION): spin_lock_irqsave(&cs->lock, flags); if (cs->tx_skb) { if (cs->debug & L1_DEB_WARN) debugl1(cs, " l2l1 tx_skb exist this shouldn't happen"); skb_queue_tail(&cs->sq, skb); } else { if (cs->debug & DEB_DLOG_HEX) LogFrame(cs, skb->data, skb->len); if (cs->debug & DEB_DLOG_VERBOSE) dlogframe(cs, skb, 0); cs->tx_skb = skb; cs->tx_cnt = 0; #ifdef L2FRAME_DEBUG /* psa */ if (cs->debug & L1_DEB_LAPD) Logl2Frame(cs, skb, "PH_DATA_PULLED", 0); #endif isac_fill_fifo(cs); } spin_unlock_irqrestore(&cs->lock, flags); break; case (PH_PULL | REQUEST): #ifdef L2FRAME_DEBUG /* psa */ if (cs->debug & L1_DEB_LAPD) debugl1(cs, "-> PH_REQUEST_PULL"); #endif if (!cs->tx_skb) { test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags); st->l1.l1l2(st, PH_PULL | CONFIRM, NULL); } else test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags); break; case (HW_RESET | REQUEST): spin_lock_irqsave(&cs->lock, flags); if ((cs->dc.isac.ph_state == ISAC_IND_EI) || (cs->dc.isac.ph_state == ISAC_IND_DR) || (cs->dc.isac.ph_state == ISAC_IND_RS)) ph_command(cs, ISAC_CMD_TIM); else ph_command(cs, ISAC_CMD_RS); spin_unlock_irqrestore(&cs->lock, flags); break; case (HW_ENABLE | REQUEST): spin_lock_irqsave(&cs->lock, flags); ph_command(cs, ISAC_CMD_TIM); spin_unlock_irqrestore(&cs->lock, flags); break; case (HW_INFO3 | REQUEST): spin_lock_irqsave(&cs->lock, flags); ph_command(cs, ISAC_CMD_AR8); spin_unlock_irqrestore(&cs->lock, flags); break; case (HW_TESTLOOP | REQUEST): spin_lock_irqsave(&cs->lock, flags); val = 0; if (1 & (long) arg) val |= 0x0c; if (2 & (long) arg) val |= 0x3; if (test_bit(HW_IOM1, &cs->HW_Flags)) { /* IOM 1 Mode */ if (!val) { cs->writeisac(cs, ISAC_SPCR, 0xa); cs->writeisac(cs, ISAC_ADF1, 0x2); } else { cs->writeisac(cs, ISAC_SPCR, val); cs->writeisac(cs, ISAC_ADF1, 0xa); } } else { /* IOM 2 Mode */ cs->writeisac(cs, ISAC_SPCR, val); if (val) cs->writeisac(cs, ISAC_ADF1, 0x8); else cs->writeisac(cs, ISAC_ADF1, 0x0); } spin_unlock_irqrestore(&cs->lock, flags); break; case (HW_DEACTIVATE | RESPONSE): skb_queue_purge(&cs->rq); skb_queue_purge(&cs->sq); if (cs->tx_skb) { dev_kfree_skb_any(cs->tx_skb); cs->tx_skb = NULL; } if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) del_timer(&cs->dbusytimer); if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags)) schedule_event(cs, D_CLEARBUSY); break; default: if (cs->debug & L1_DEB_WARN) debugl1(cs, "isac_l1hw unknown %04x", pr); break; } } static void setstack_isac(struct PStack *st, struct IsdnCardState *cs) { st->l1.l1hw = ISAC_l1hw; } static void DC_Close_isac(struct IsdnCardState *cs) { kfree(cs->dc.isac.mon_rx); cs->dc.isac.mon_rx = NULL; kfree(cs->dc.isac.mon_tx); cs->dc.isac.mon_tx = NULL; } static void dbusy_timer_handler(struct IsdnCardState *cs) { struct PStack *stptr; int rbch, star; if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) { rbch = cs->readisac(cs, ISAC_RBCH); star = cs->readisac(cs, ISAC_STAR); if (cs->debug) debugl1(cs, "D-Channel Busy RBCH %02x STAR %02x", rbch, star); if (rbch & ISAC_RBCH_XAC) { /* D-Channel Busy */ test_and_set_bit(FLG_L1_DBUSY, &cs->HW_Flags); stptr = cs->stlist; while (stptr != NULL) { stptr->l1.l1l2(stptr, PH_PAUSE | INDICATION, NULL); stptr = stptr->next; } } else { /* discard frame; reset transceiver */ test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags); if (cs->tx_skb) { dev_kfree_skb_any(cs->tx_skb); cs->tx_cnt = 0; cs->tx_skb = NULL; } else { printk(KERN_WARNING "HiSax: ISAC D-Channel Busy no skb\n"); debugl1(cs, "D-Channel Busy no skb"); } cs->writeisac(cs, ISAC_CMDR, 0x01); /* Transmitter reset */ cs->irq_func(cs->irq, cs); } } } void initisac(struct IsdnCardState *cs) { cs->setstack_d = setstack_isac; cs->DC_Close = DC_Close_isac; cs->dc.isac.mon_tx = NULL; cs->dc.isac.mon_rx = NULL; cs->writeisac(cs, ISAC_MASK, 0xff); cs->dc.isac.mocr = 0xaa; if (test_bit(HW_IOM1, &cs->HW_Flags)) { /* IOM 1 Mode */ cs->writeisac(cs, ISAC_ADF2, 0x0); cs->writeisac(cs, ISAC_SPCR, 0xa); cs->writeisac(cs, ISAC_ADF1, 0x2); cs->writeisac(cs, ISAC_STCR, 0x70); cs->writeisac(cs, ISAC_MODE, 0xc9); } else { /* IOM 2 Mode */ if (!cs->dc.isac.adf2) cs->dc.isac.adf2 = 0x80; cs->writeisac(cs, ISAC_ADF2, cs->dc.isac.adf2); cs->writeisac(cs, ISAC_SQXR, 0x2f); cs->writeisac(cs, ISAC_SPCR, 0x00); cs->writeisac(cs, ISAC_STCR, 0x70); cs->writeisac(cs, ISAC_MODE, 0xc9); cs->writeisac(cs, ISAC_TIMR, 0x00); cs->writeisac(cs, ISAC_ADF1, 0x00); } ph_command(cs, ISAC_CMD_RS); cs->writeisac(cs, ISAC_MASK, 0x0); } void clear_pending_isac_ints(struct IsdnCardState *cs) { int val, eval; val = cs->readisac(cs, ISAC_STAR); debugl1(cs, "ISAC STAR %x", val); val = cs->readisac(cs, ISAC_MODE); debugl1(cs, "ISAC MODE %x", val); val = cs->readisac(cs, ISAC_ADF2); debugl1(cs, "ISAC ADF2 %x", val); val = cs->readisac(cs, ISAC_ISTA); debugl1(cs, "ISAC ISTA %x", val); if (val & 0x01) { eval = cs->readisac(cs, ISAC_EXIR); debugl1(cs, "ISAC EXIR %x", eval); } val = cs->readisac(cs, ISAC_CIR0); debugl1(cs, "ISAC CIR0 %x", val); cs->dc.isac.ph_state = (val >> 2) & 0xf; schedule_event(cs, D_L1STATECHANGE); /* Disable all IRQ */ cs->writeisac(cs, ISAC_MASK, 0xFF); } void setup_isac(struct IsdnCardState *cs) { INIT_WORK(&cs->tqueue, isac_bh); setup_timer(&cs->dbusytimer, (void *)dbusy_timer_handler, (long)cs); }