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path: root/drivers/isdn/hisax/isac.c
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Diffstat (limited to 'drivers/isdn/hisax/isac.c')
-rw-r--r--drivers/isdn/hisax/isac.c681
1 files changed, 0 insertions, 681 deletions
diff --git a/drivers/isdn/hisax/isac.c b/drivers/isdn/hisax/isac.c
deleted file mode 100644
index bd40e0671ded..000000000000
--- a/drivers/isdn/hisax/isac.c
+++ /dev/null
@@ -1,681 +0,0 @@
-/* $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 <keil@isdn4linux.de>
- *
- * 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 <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-
-#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);
- }
- 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 timer_list *t)
-{
- struct IsdnCardState *cs = from_timer(cs, t, dbusytimer);
- 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);
- timer_setup(&cs->dbusytimer, dbusy_timer_handler, 0);
-}
generated by cgit (git 2.34.1) at 2024-05-06 18:41:47 +0000