Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 930 insertions, 0 deletions

diff --git a/drivers/isdn/hisax/isdnl1.c b/drivers/isdn/hisax/isdnl1.c
new file mode 100644
index 000000000..a560842c0
--- /dev/null
+++ b/drivers/isdn/hisax/isdnl1.c
@@ -0,0 +1,930 @@
+/* $Id: isdnl1.c,v 2.46.2.5 2004/02/11 13:21:34 keil Exp $
+ *
+ * common low level stuff for Siemens Chipsetbased isdn cards
+ *
+ * Author       Karsten Keil
+ *              based on the teles driver from Jan den Ouden
+ * 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
+ *
+ * Thanks to    Jan den Ouden
+ *              Fritz Elfert
+ *              Beat Doebeli
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/gfp.h>
+#include "hisax.h"
+#include "isdnl1.h"
+
+const char *l1_revision = "$Revision: 2.46.2.5 $";
+
+#define TIMER3_VALUE 7000
+
+static struct Fsm l1fsm_b;
+static struct Fsm l1fsm_s;
+
+enum {
+	ST_L1_F2,
+	ST_L1_F3,
+	ST_L1_F4,
+	ST_L1_F5,
+	ST_L1_F6,
+	ST_L1_F7,
+	ST_L1_F8,
+};
+
+#define L1S_STATE_COUNT (ST_L1_F8 + 1)
+
+static char *strL1SState[] =
+{
+	"ST_L1_F2",
+	"ST_L1_F3",
+	"ST_L1_F4",
+	"ST_L1_F5",
+	"ST_L1_F6",
+	"ST_L1_F7",
+	"ST_L1_F8",
+};
+
+#ifdef HISAX_UINTERFACE
+static
+struct Fsm l1fsm_u =
+{NULL, 0, 0, NULL, NULL};
+
+enum {
+	ST_L1_RESET,
+	ST_L1_DEACT,
+	ST_L1_SYNC2,
+	ST_L1_TRANS,
+};
+
+#define L1U_STATE_COUNT (ST_L1_TRANS + 1)
+
+static char *strL1UState[] =
+{
+	"ST_L1_RESET",
+	"ST_L1_DEACT",
+	"ST_L1_SYNC2",
+	"ST_L1_TRANS",
+};
+#endif
+
+enum {
+	ST_L1_NULL,
+	ST_L1_WAIT_ACT,
+	ST_L1_WAIT_DEACT,
+	ST_L1_ACTIV,
+};
+
+#define L1B_STATE_COUNT (ST_L1_ACTIV + 1)
+
+static char *strL1BState[] =
+{
+	"ST_L1_NULL",
+	"ST_L1_WAIT_ACT",
+	"ST_L1_WAIT_DEACT",
+	"ST_L1_ACTIV",
+};
+
+enum {
+	EV_PH_ACTIVATE,
+	EV_PH_DEACTIVATE,
+	EV_RESET_IND,
+	EV_DEACT_CNF,
+	EV_DEACT_IND,
+	EV_POWER_UP,
+	EV_RSYNC_IND,
+	EV_INFO2_IND,
+	EV_INFO4_IND,
+	EV_TIMER_DEACT,
+	EV_TIMER_ACT,
+	EV_TIMER3,
+};
+
+#define L1_EVENT_COUNT (EV_TIMER3 + 1)
+
+static char *strL1Event[] =
+{
+	"EV_PH_ACTIVATE",
+	"EV_PH_DEACTIVATE",
+	"EV_RESET_IND",
+	"EV_DEACT_CNF",
+	"EV_DEACT_IND",
+	"EV_POWER_UP",
+	"EV_RSYNC_IND",
+	"EV_INFO2_IND",
+	"EV_INFO4_IND",
+	"EV_TIMER_DEACT",
+	"EV_TIMER_ACT",
+	"EV_TIMER3",
+};
+
+void
+debugl1(struct IsdnCardState *cs, char *fmt, ...)
+{
+	va_list args;
+	char tmp[8];
+
+	va_start(args, fmt);
+	sprintf(tmp, "Card%d ", cs->cardnr + 1);
+	VHiSax_putstatus(cs, tmp, fmt, args);
+	va_end(args);
+}
+
+static void
+l1m_debug(struct FsmInst *fi, char *fmt, ...)
+{
+	va_list args;
+	struct PStack *st = fi->userdata;
+	struct IsdnCardState *cs = st->l1.hardware;
+	char tmp[8];
+
+	va_start(args, fmt);
+	sprintf(tmp, "Card%d ", cs->cardnr + 1);
+	VHiSax_putstatus(cs, tmp, fmt, args);
+	va_end(args);
+}
+
+static void
+L1activated(struct IsdnCardState *cs)
+{
+	struct PStack *st;
+
+	st = cs->stlist;
+	while (st) {
+		if (test_and_clear_bit(FLG_L1_ACTIVATING, &st->l1.Flags))
+			st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
+		else
+			st->l1.l1l2(st, PH_ACTIVATE | INDICATION, NULL);
+		st = st->next;
+	}
+}
+
+static void
+L1deactivated(struct IsdnCardState *cs)
+{
+	struct PStack *st;
+
+	st = cs->stlist;
+	while (st) {
+		if (test_bit(FLG_L1_DBUSY, &cs->HW_Flags))
+			st->l1.l1l2(st, PH_PAUSE | CONFIRM, NULL);
+		st->l1.l1l2(st, PH_DEACTIVATE | INDICATION, NULL);
+		st = st->next;
+	}
+	test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags);
+}
+
+void
+DChannel_proc_xmt(struct IsdnCardState *cs)
+{
+	struct PStack *stptr;
+
+	if (cs->tx_skb)
+		return;
+
+	stptr = cs->stlist;
+	while (stptr != NULL) {
+		if (test_and_clear_bit(FLG_L1_PULL_REQ, &stptr->l1.Flags)) {
+			stptr->l1.l1l2(stptr, PH_PULL | CONFIRM, NULL);
+			break;
+		} else
+			stptr = stptr->next;
+	}
+}
+
+void
+DChannel_proc_rcv(struct IsdnCardState *cs)
+{
+	struct sk_buff *skb, *nskb;
+	struct PStack *stptr = cs->stlist;
+	int found, tei, sapi;
+
+	if (stptr)
+		if (test_bit(FLG_L1_ACTTIMER, &stptr->l1.Flags))
+			FsmEvent(&stptr->l1.l1m, EV_TIMER_ACT, NULL);
+	while ((skb = skb_dequeue(&cs->rq))) {
+#ifdef L2FRAME_DEBUG		/* psa */
+		if (cs->debug & L1_DEB_LAPD)
+			Logl2Frame(cs, skb, "PH_DATA", 1);
+#endif
+		stptr = cs->stlist;
+		if (skb->len < 3) {
+			debugl1(cs, "D-channel frame too short(%d)", skb->len);
+			dev_kfree_skb(skb);
+			return;
+		}
+		if ((skb->data[0] & 1) || !(skb->data[1] & 1)) {
+			debugl1(cs, "D-channel frame wrong EA0/EA1");
+			dev_kfree_skb(skb);
+			return;
+		}
+		sapi = skb->data[0] >> 2;
+		tei = skb->data[1] >> 1;
+		if (cs->debug & DEB_DLOG_HEX)
+			LogFrame(cs, skb->data, skb->len);
+		if (cs->debug & DEB_DLOG_VERBOSE)
+			dlogframe(cs, skb, 1);
+		if (tei == GROUP_TEI) {
+			if (sapi == CTRL_SAPI) { /* sapi 0 */
+				while (stptr != NULL) {
+					if ((nskb = skb_clone(skb, GFP_ATOMIC)))
+						stptr->l1.l1l2(stptr, PH_DATA | INDICATION, nskb);
+					else
+						printk(KERN_WARNING "HiSax: isdn broadcast buffer shortage\n");
+					stptr = stptr->next;
+				}
+			} else if (sapi == TEI_SAPI) {
+				while (stptr != NULL) {
+					if ((nskb = skb_clone(skb, GFP_ATOMIC)))
+						stptr->l1.l1tei(stptr, PH_DATA | INDICATION, nskb);
+					else
+						printk(KERN_WARNING "HiSax: tei broadcast buffer shortage\n");
+					stptr = stptr->next;
+				}
+			}
+			dev_kfree_skb(skb);
+		} else if (sapi == CTRL_SAPI) { /* sapi 0 */
+			found = 0;
+			while (stptr != NULL)
+				if (tei == stptr->l2.tei) {
+					stptr->l1.l1l2(stptr, PH_DATA | INDICATION, skb);
+					found = !0;
+					break;
+				} else
+					stptr = stptr->next;
+			if (!found)
+				dev_kfree_skb(skb);
+		} else
+			dev_kfree_skb(skb);
+	}
+}
+
+static void
+BChannel_proc_xmt(struct BCState *bcs)
+{
+	struct PStack *st = bcs->st;
+
+	if (test_bit(BC_FLG_BUSY, &bcs->Flag)) {
+		debugl1(bcs->cs, "BC_BUSY Error");
+		return;
+	}
+
+	if (test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags))
+		st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
+	if (!test_bit(BC_FLG_ACTIV, &bcs->Flag)) {
+		if (!test_bit(BC_FLG_BUSY, &bcs->Flag) &&
+		    skb_queue_empty(&bcs->squeue)) {
+			st->l2.l2l1(st, PH_DEACTIVATE | CONFIRM, NULL);
+		}
+	}
+}
+
+static void
+BChannel_proc_rcv(struct BCState *bcs)
+{
+	struct sk_buff *skb;
+
+	if (bcs->st->l1.l1m.state == ST_L1_WAIT_ACT) {
+		FsmDelTimer(&bcs->st->l1.timer, 4);
+		FsmEvent(&bcs->st->l1.l1m, EV_TIMER_ACT, NULL);
+	}
+	while ((skb = skb_dequeue(&bcs->rqueue))) {
+		bcs->st->l1.l1l2(bcs->st, PH_DATA | INDICATION, skb);
+	}
+}
+
+static void
+BChannel_proc_ack(struct BCState *bcs)
+{
+	u_long	flags;
+	int	ack;
+
+	spin_lock_irqsave(&bcs->aclock, flags);
+	ack = bcs->ackcnt;
+	bcs->ackcnt = 0;
+	spin_unlock_irqrestore(&bcs->aclock, flags);
+	if (ack)
+		lli_writewakeup(bcs->st, ack);
+}
+
+void
+BChannel_bh(struct work_struct *work)
+{
+	struct BCState *bcs = container_of(work, struct BCState, tqueue);
+
+	if (!bcs)
+		return;
+	if (test_and_clear_bit(B_RCVBUFREADY, &bcs->event))
+		BChannel_proc_rcv(bcs);
+	if (test_and_clear_bit(B_XMTBUFREADY, &bcs->event))
+		BChannel_proc_xmt(bcs);
+	if (test_and_clear_bit(B_ACKPENDING, &bcs->event))
+		BChannel_proc_ack(bcs);
+}
+
+void
+HiSax_addlist(struct IsdnCardState *cs,
+	      struct PStack *st)
+{
+	st->next = cs->stlist;
+	cs->stlist = st;
+}
+
+void
+HiSax_rmlist(struct IsdnCardState *cs,
+	     struct PStack *st)
+{
+	struct PStack *p;
+
+	FsmDelTimer(&st->l1.timer, 0);
+	if (cs->stlist == st)
+		cs->stlist = st->next;
+	else {
+		p = cs->stlist;
+		while (p)
+			if (p->next == st) {
+				p->next = st->next;
+				return;
+			} else
+				p = p->next;
+	}
+}
+
+void
+init_bcstate(struct IsdnCardState *cs, int bc)
+{
+	struct BCState *bcs = cs->bcs + bc;
+
+	bcs->cs = cs;
+	bcs->channel = bc;
+	INIT_WORK(&bcs->tqueue, BChannel_bh);
+	spin_lock_init(&bcs->aclock);
+	bcs->BC_SetStack = NULL;
+	bcs->BC_Close = NULL;
+	bcs->Flag = 0;
+}
+
+#ifdef L2FRAME_DEBUG		/* psa */
+
+static char *
+l2cmd(u_char cmd)
+{
+	switch (cmd & ~0x10) {
+	case 1:
+		return "RR";
+	case 5:
+		return "RNR";
+	case 9:
+		return "REJ";
+	case 0x6f:
+		return "SABME";
+	case 0x0f:
+		return "DM";
+	case 3:
+		return "UI";
+	case 0x43:
+		return "DISC";
+	case 0x63:
+		return "UA";
+	case 0x87:
+		return "FRMR";
+	case 0xaf:
+		return "XID";
+	default:
+		if (!(cmd & 1))
+			return "I";
+		else
+			return "invalid command";
+	}
+}
+
+static char tmpdeb[32];
+
+static char *
+l2frames(u_char *ptr)
+{
+	switch (ptr[2] & ~0x10) {
+	case 1:
+	case 5:
+	case 9:
+		sprintf(tmpdeb, "%s[%d](nr %d)", l2cmd(ptr[2]), ptr[3] & 1, ptr[3] >> 1);
+		break;
+	case 0x6f:
+	case 0x0f:
+	case 3:
+	case 0x43:
+	case 0x63:
+	case 0x87:
+	case 0xaf:
+		sprintf(tmpdeb, "%s[%d]", l2cmd(ptr[2]), (ptr[2] & 0x10) >> 4);
+		break;
+	default:
+		if (!(ptr[2] & 1)) {
+			sprintf(tmpdeb, "I[%d](ns %d, nr %d)", ptr[3] & 1, ptr[2] >> 1, ptr[3] >> 1);
+			break;
+		} else
+			return "invalid command";
+	}
+
+
+	return tmpdeb;
+}
+
+void
+Logl2Frame(struct IsdnCardState *cs, struct sk_buff *skb, char *buf, int dir)
+{
+	u_char *ptr;
+
+	ptr = skb->data;
+
+	if (ptr[0] & 1 || !(ptr[1] & 1))
+		debugl1(cs, "Address not LAPD");
+	else
+		debugl1(cs, "%s %s: %s%c (sapi %d, tei %d)",
+			(dir ? "<-" : "->"), buf, l2frames(ptr),
+			((ptr[0] & 2) >> 1) == dir ? 'C' : 'R', ptr[0] >> 2, ptr[1] >> 1);
+}
+#endif
+
+static void
+l1_reset(struct FsmInst *fi, int event, void *arg)
+{
+	FsmChangeState(fi, ST_L1_F3);
+}
+
+static void
+l1_deact_cnf(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	FsmChangeState(fi, ST_L1_F3);
+	if (test_bit(FLG_L1_ACTIVATING, &st->l1.Flags))
+		st->l1.l1hw(st, HW_ENABLE | REQUEST, NULL);
+}
+
+static void
+l1_deact_req_s(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	FsmChangeState(fi, ST_L1_F3);
+	FsmRestartTimer(&st->l1.timer, 550, EV_TIMER_DEACT, NULL, 2);
+	test_and_set_bit(FLG_L1_DEACTTIMER, &st->l1.Flags);
+}
+
+static void
+l1_power_up_s(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	if (test_bit(FLG_L1_ACTIVATING, &st->l1.Flags)) {
+		FsmChangeState(fi, ST_L1_F4);
+		st->l1.l1hw(st, HW_INFO3 | REQUEST, NULL);
+		FsmRestartTimer(&st->l1.timer, TIMER3_VALUE, EV_TIMER3, NULL, 2);
+		test_and_set_bit(FLG_L1_T3RUN, &st->l1.Flags);
+	} else
+		FsmChangeState(fi, ST_L1_F3);
+}
+
+static void
+l1_go_F5(struct FsmInst *fi, int event, void *arg)
+{
+	FsmChangeState(fi, ST_L1_F5);
+}
+
+static void
+l1_go_F8(struct FsmInst *fi, int event, void *arg)
+{
+	FsmChangeState(fi, ST_L1_F8);
+}
+
+static void
+l1_info2_ind(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+#ifdef HISAX_UINTERFACE
+	if (test_bit(FLG_L1_UINT, &st->l1.Flags))
+		FsmChangeState(fi, ST_L1_SYNC2);
+	else
+#endif
+		FsmChangeState(fi, ST_L1_F6);
+	st->l1.l1hw(st, HW_INFO3 | REQUEST, NULL);
+}
+
+static void
+l1_info4_ind(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+#ifdef HISAX_UINTERFACE
+	if (test_bit(FLG_L1_UINT, &st->l1.Flags))
+		FsmChangeState(fi, ST_L1_TRANS);
+	else
+#endif
+		FsmChangeState(fi, ST_L1_F7);
+	st->l1.l1hw(st, HW_INFO3 | REQUEST, NULL);
+	if (test_and_clear_bit(FLG_L1_DEACTTIMER, &st->l1.Flags))
+		FsmDelTimer(&st->l1.timer, 4);
+	if (!test_bit(FLG_L1_ACTIVATED, &st->l1.Flags)) {
+		if (test_and_clear_bit(FLG_L1_T3RUN, &st->l1.Flags))
+			FsmDelTimer(&st->l1.timer, 3);
+		FsmRestartTimer(&st->l1.timer, 110, EV_TIMER_ACT, NULL, 2);
+		test_and_set_bit(FLG_L1_ACTTIMER, &st->l1.Flags);
+	}
+}
+
+static void
+l1_timer3(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	test_and_clear_bit(FLG_L1_T3RUN, &st->l1.Flags);
+	if (test_and_clear_bit(FLG_L1_ACTIVATING, &st->l1.Flags))
+		L1deactivated(st->l1.hardware);
+
+#ifdef HISAX_UINTERFACE
+	if (!test_bit(FLG_L1_UINT, &st->l1.Flags))
+#endif
+		if (st->l1.l1m.state != ST_L1_F6) {
+			FsmChangeState(fi, ST_L1_F3);
+			st->l1.l1hw(st, HW_ENABLE | REQUEST, NULL);
+		}
+}
+
+static void
+l1_timer_act(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	test_and_clear_bit(FLG_L1_ACTTIMER, &st->l1.Flags);
+	test_and_set_bit(FLG_L1_ACTIVATED, &st->l1.Flags);
+	L1activated(st->l1.hardware);
+}
+
+static void
+l1_timer_deact(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	test_and_clear_bit(FLG_L1_DEACTTIMER, &st->l1.Flags);
+	test_and_clear_bit(FLG_L1_ACTIVATED, &st->l1.Flags);
+	L1deactivated(st->l1.hardware);
+	st->l1.l1hw(st, HW_DEACTIVATE | RESPONSE, NULL);
+}
+
+static void
+l1_activate_s(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	st->l1.l1hw(st, HW_RESET | REQUEST, NULL);
+}
+
+static void
+l1_activate_no(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	if ((!test_bit(FLG_L1_DEACTTIMER, &st->l1.Flags)) && (!test_bit(FLG_L1_T3RUN, &st->l1.Flags))) {
+		test_and_clear_bit(FLG_L1_ACTIVATING, &st->l1.Flags);
+		L1deactivated(st->l1.hardware);
+	}
+}
+
+static struct FsmNode L1SFnList[] __initdata =
+{
+	{ST_L1_F3, EV_PH_ACTIVATE, l1_activate_s},
+	{ST_L1_F6, EV_PH_ACTIVATE, l1_activate_no},
+	{ST_L1_F8, EV_PH_ACTIVATE, l1_activate_no},
+	{ST_L1_F3, EV_RESET_IND, l1_reset},
+	{ST_L1_F4, EV_RESET_IND, l1_reset},
+	{ST_L1_F5, EV_RESET_IND, l1_reset},
+	{ST_L1_F6, EV_RESET_IND, l1_reset},
+	{ST_L1_F7, EV_RESET_IND, l1_reset},
+	{ST_L1_F8, EV_RESET_IND, l1_reset},
+	{ST_L1_F3, EV_DEACT_CNF, l1_deact_cnf},
+	{ST_L1_F4, EV_DEACT_CNF, l1_deact_cnf},
+	{ST_L1_F5, EV_DEACT_CNF, l1_deact_cnf},
+	{ST_L1_F6, EV_DEACT_CNF, l1_deact_cnf},
+	{ST_L1_F7, EV_DEACT_CNF, l1_deact_cnf},
+	{ST_L1_F8, EV_DEACT_CNF, l1_deact_cnf},
+	{ST_L1_F6, EV_DEACT_IND, l1_deact_req_s},
+	{ST_L1_F7, EV_DEACT_IND, l1_deact_req_s},
+	{ST_L1_F8, EV_DEACT_IND, l1_deact_req_s},
+	{ST_L1_F3, EV_POWER_UP, l1_power_up_s},
+	{ST_L1_F4, EV_RSYNC_IND, l1_go_F5},
+	{ST_L1_F6, EV_RSYNC_IND, l1_go_F8},
+	{ST_L1_F7, EV_RSYNC_IND, l1_go_F8},
+	{ST_L1_F3, EV_INFO2_IND, l1_info2_ind},
+	{ST_L1_F4, EV_INFO2_IND, l1_info2_ind},
+	{ST_L1_F5, EV_INFO2_IND, l1_info2_ind},
+	{ST_L1_F7, EV_INFO2_IND, l1_info2_ind},
+	{ST_L1_F8, EV_INFO2_IND, l1_info2_ind},
+	{ST_L1_F3, EV_INFO4_IND, l1_info4_ind},
+	{ST_L1_F4, EV_INFO4_IND, l1_info4_ind},
+	{ST_L1_F5, EV_INFO4_IND, l1_info4_ind},
+	{ST_L1_F6, EV_INFO4_IND, l1_info4_ind},
+	{ST_L1_F8, EV_INFO4_IND, l1_info4_ind},
+	{ST_L1_F3, EV_TIMER3, l1_timer3},
+	{ST_L1_F4, EV_TIMER3, l1_timer3},
+	{ST_L1_F5, EV_TIMER3, l1_timer3},
+	{ST_L1_F6, EV_TIMER3, l1_timer3},
+	{ST_L1_F8, EV_TIMER3, l1_timer3},
+	{ST_L1_F7, EV_TIMER_ACT, l1_timer_act},
+	{ST_L1_F3, EV_TIMER_DEACT, l1_timer_deact},
+	{ST_L1_F4, EV_TIMER_DEACT, l1_timer_deact},
+	{ST_L1_F5, EV_TIMER_DEACT, l1_timer_deact},
+	{ST_L1_F6, EV_TIMER_DEACT, l1_timer_deact},
+	{ST_L1_F7, EV_TIMER_DEACT, l1_timer_deact},
+	{ST_L1_F8, EV_TIMER_DEACT, l1_timer_deact},
+};
+
+#ifdef HISAX_UINTERFACE
+static void
+l1_deact_req_u(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	FsmChangeState(fi, ST_L1_RESET);
+	FsmRestartTimer(&st->l1.timer, 550, EV_TIMER_DEACT, NULL, 2);
+	test_and_set_bit(FLG_L1_DEACTTIMER, &st->l1.Flags);
+	st->l1.l1hw(st, HW_ENABLE | REQUEST, NULL);
+}
+
+static void
+l1_power_up_u(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	FsmRestartTimer(&st->l1.timer, TIMER3_VALUE, EV_TIMER3, NULL, 2);
+	test_and_set_bit(FLG_L1_T3RUN, &st->l1.Flags);
+}
+
+static void
+l1_info0_ind(struct FsmInst *fi, int event, void *arg)
+{
+	FsmChangeState(fi, ST_L1_DEACT);
+}
+
+static void
+l1_activate_u(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	st->l1.l1hw(st, HW_INFO1 | REQUEST, NULL);
+}
+
+static struct FsmNode L1UFnList[] __initdata =
+{
+	{ST_L1_RESET, EV_DEACT_IND, l1_deact_req_u},
+	{ST_L1_DEACT, EV_DEACT_IND, l1_deact_req_u},
+	{ST_L1_SYNC2, EV_DEACT_IND, l1_deact_req_u},
+	{ST_L1_TRANS, EV_DEACT_IND, l1_deact_req_u},
+	{ST_L1_DEACT, EV_PH_ACTIVATE, l1_activate_u},
+	{ST_L1_DEACT, EV_POWER_UP, l1_power_up_u},
+	{ST_L1_DEACT, EV_INFO2_IND, l1_info2_ind},
+	{ST_L1_TRANS, EV_INFO2_IND, l1_info2_ind},
+	{ST_L1_RESET, EV_DEACT_CNF, l1_info0_ind},
+	{ST_L1_DEACT, EV_INFO4_IND, l1_info4_ind},
+	{ST_L1_SYNC2, EV_INFO4_IND, l1_info4_ind},
+	{ST_L1_RESET, EV_INFO4_IND, l1_info4_ind},
+	{ST_L1_DEACT, EV_TIMER3, l1_timer3},
+	{ST_L1_SYNC2, EV_TIMER3, l1_timer3},
+	{ST_L1_TRANS, EV_TIMER_ACT, l1_timer_act},
+	{ST_L1_DEACT, EV_TIMER_DEACT, l1_timer_deact},
+	{ST_L1_SYNC2, EV_TIMER_DEACT, l1_timer_deact},
+	{ST_L1_RESET, EV_TIMER_DEACT, l1_timer_deact},
+};
+
+#endif
+
+static void
+l1b_activate(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	FsmChangeState(fi, ST_L1_WAIT_ACT);
+	FsmRestartTimer(&st->l1.timer, st->l1.delay, EV_TIMER_ACT, NULL, 2);
+}
+
+static void
+l1b_deactivate(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	FsmChangeState(fi, ST_L1_WAIT_DEACT);
+	FsmRestartTimer(&st->l1.timer, 10, EV_TIMER_DEACT, NULL, 2);
+}
+
+static void
+l1b_timer_act(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	FsmChangeState(fi, ST_L1_ACTIV);
+	st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
+}
+
+static void
+l1b_timer_deact(struct FsmInst *fi, int event, void *arg)
+{
+	struct PStack *st = fi->userdata;
+
+	FsmChangeState(fi, ST_L1_NULL);
+	st->l2.l2l1(st, PH_DEACTIVATE | CONFIRM, NULL);
+}
+
+static struct FsmNode L1BFnList[] __initdata =
+{
+	{ST_L1_NULL, EV_PH_ACTIVATE, l1b_activate},
+	{ST_L1_WAIT_ACT, EV_TIMER_ACT, l1b_timer_act},
+	{ST_L1_ACTIV, EV_PH_DEACTIVATE, l1b_deactivate},
+	{ST_L1_WAIT_DEACT, EV_TIMER_DEACT, l1b_timer_deact},
+};
+
+int __init
+Isdnl1New(void)
+{
+	int retval;
+
+	l1fsm_s.state_count = L1S_STATE_COUNT;
+	l1fsm_s.event_count = L1_EVENT_COUNT;
+	l1fsm_s.strEvent = strL1Event;
+	l1fsm_s.strState = strL1SState;
+	retval = FsmNew(&l1fsm_s, L1SFnList, ARRAY_SIZE(L1SFnList));
+	if (retval)
+		return retval;
+
+	l1fsm_b.state_count = L1B_STATE_COUNT;
+	l1fsm_b.event_count = L1_EVENT_COUNT;
+	l1fsm_b.strEvent = strL1Event;
+	l1fsm_b.strState = strL1BState;
+	retval = FsmNew(&l1fsm_b, L1BFnList, ARRAY_SIZE(L1BFnList));
+	if (retval) {
+		FsmFree(&l1fsm_s);
+		return retval;
+	}
+#ifdef HISAX_UINTERFACE
+	l1fsm_u.state_count = L1U_STATE_COUNT;
+	l1fsm_u.event_count = L1_EVENT_COUNT;
+	l1fsm_u.strEvent = strL1Event;
+	l1fsm_u.strState = strL1UState;
+	retval = FsmNew(&l1fsm_u, L1UFnList, ARRAY_SIZE(L1UFnList));
+	if (retval) {
+		FsmFree(&l1fsm_s);
+		FsmFree(&l1fsm_b);
+		return retval;
+	}
+#endif
+	return 0;
+}
+
+void Isdnl1Free(void)
+{
+#ifdef HISAX_UINTERFACE
+	FsmFree(&l1fsm_u);
+#endif
+	FsmFree(&l1fsm_s);
+	FsmFree(&l1fsm_b);
+}
+
+static void
+dch_l2l1(struct PStack *st, int pr, void *arg)
+{
+	struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
+
+	switch (pr) {
+	case (PH_DATA | REQUEST):
+	case (PH_PULL | REQUEST):
+	case (PH_PULL | INDICATION):
+		st->l1.l1hw(st, pr, arg);
+		break;
+	case (PH_ACTIVATE | REQUEST):
+		if (cs->debug)
+			debugl1(cs, "PH_ACTIVATE_REQ %s",
+				st->l1.l1m.fsm->strState[st->l1.l1m.state]);
+		if (test_bit(FLG_L1_ACTIVATED, &st->l1.Flags))
+			st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
+		else {
+			test_and_set_bit(FLG_L1_ACTIVATING, &st->l1.Flags);
+			FsmEvent(&st->l1.l1m, EV_PH_ACTIVATE, arg);
+		}
+		break;
+	case (PH_TESTLOOP | REQUEST):
+		if (1 & (long) arg)
+			debugl1(cs, "PH_TEST_LOOP B1");
+		if (2 & (long) arg)
+			debugl1(cs, "PH_TEST_LOOP B2");
+		if (!(3 & (long) arg))
+			debugl1(cs, "PH_TEST_LOOP DISABLED");
+		st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
+		break;
+	default:
+		if (cs->debug)
+			debugl1(cs, "dch_l2l1 msg %04X unhandled", pr);
+		break;
+	}
+}
+
+void
+l1_msg(struct IsdnCardState *cs, int pr, void *arg) {
+	struct PStack *st;
+
+	st = cs->stlist;
+
+	while (st) {
+		switch (pr) {
+		case (HW_RESET | INDICATION):
+			FsmEvent(&st->l1.l1m, EV_RESET_IND, arg);
+			break;
+		case (HW_DEACTIVATE | CONFIRM):
+			FsmEvent(&st->l1.l1m, EV_DEACT_CNF, arg);
+			break;
+		case (HW_DEACTIVATE | INDICATION):
+			FsmEvent(&st->l1.l1m, EV_DEACT_IND, arg);
+			break;
+		case (HW_POWERUP | CONFIRM):
+			FsmEvent(&st->l1.l1m, EV_POWER_UP, arg);
+			break;
+		case (HW_RSYNC | INDICATION):
+			FsmEvent(&st->l1.l1m, EV_RSYNC_IND, arg);
+			break;
+		case (HW_INFO2 | INDICATION):
+			FsmEvent(&st->l1.l1m, EV_INFO2_IND, arg);
+			break;
+		case (HW_INFO4_P8 | INDICATION):
+		case (HW_INFO4_P10 | INDICATION):
+			FsmEvent(&st->l1.l1m, EV_INFO4_IND, arg);
+			break;
+		default:
+			if (cs->debug)
+				debugl1(cs, "%s %04X unhandled", __func__, pr);
+			break;
+		}
+		st = st->next;
+	}
+}
+
+void
+l1_msg_b(struct PStack *st, int pr, void *arg) {
+	switch (pr) {
+	case (PH_ACTIVATE | REQUEST):
+		FsmEvent(&st->l1.l1m, EV_PH_ACTIVATE, NULL);
+		break;
+	case (PH_DEACTIVATE | REQUEST):
+		FsmEvent(&st->l1.l1m, EV_PH_DEACTIVATE, NULL);
+		break;
+	}
+}
+
+void
+setstack_HiSax(struct PStack *st, struct IsdnCardState *cs)
+{
+	st->l1.hardware = cs;
+	st->protocol = cs->protocol;
+	st->l1.l1m.fsm = &l1fsm_s;
+	st->l1.l1m.state = ST_L1_F3;
+	st->l1.Flags = 0;
+#ifdef HISAX_UINTERFACE
+	if (test_bit(FLG_HW_L1_UINT, &cs->HW_Flags)) {
+		st->l1.l1m.fsm = &l1fsm_u;
+		st->l1.l1m.state = ST_L1_RESET;
+		st->l1.Flags = FLG_L1_UINT;
+	}
+#endif
+	st->l1.l1m.debug = cs->debug;
+	st->l1.l1m.userdata = st;
+	st->l1.l1m.userint = 0;
+	st->l1.l1m.printdebug = l1m_debug;
+	FsmInitTimer(&st->l1.l1m, &st->l1.timer);
+	setstack_tei(st);
+	setstack_manager(st);
+	st->l1.stlistp = &(cs->stlist);
+	st->l2.l2l1  = dch_l2l1;
+	if (cs->setstack_d)
+		cs->setstack_d(st, cs);
+}
+
+void
+setstack_l1_B(struct PStack *st)
+{
+	struct IsdnCardState *cs = st->l1.hardware;
+
+	st->l1.l1m.fsm = &l1fsm_b;
+	st->l1.l1m.state = ST_L1_NULL;
+	st->l1.l1m.debug = cs->debug;
+	st->l1.l1m.userdata = st;
+	st->l1.l1m.userint = 0;
+	st->l1.l1m.printdebug = l1m_debug;
+	st->l1.Flags = 0;
+	FsmInitTimer(&st->l1.l1m, &st->l1.timer);
+}