path: root/drivers/isdn/hisax/isdnl1.c

/* $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
 *
 */

const char *l1_revision = "$Revision: 2.46.2.5 $";

#include <linux/init.h>
#include "hisax.h"
#include "isdnl1.h"

#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