[mirror_ubuntu-jammy-kernel.git] / drivers / isdn / gigaset / i4l.c

/*
 * Stuff used by all variants of the driver
 *
 * Copyright (c) 2001 by Stefan Eilers,
 *                       Hansjoerg Lipp <hjlipp@web.de>,
 *                       Tilman Schmidt <tilman@imap.cc>.
 *
 * =====================================================================
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License as
 *	published by the Free Software Foundation; either version 2 of
 *	the License, or (at your option) any later version.
 * =====================================================================
 */

#include "gigaset.h"

/* == Handling of I4L IO =====================================================*/

/* writebuf_from_LL
 * called by LL to transmit data on an open channel
 * inserts the buffer data into the send queue and starts the transmission
 * Note that this operation must not sleep!
 * When the buffer is processed completely, gigaset_skb_sent() should be called.
 * parameters:
 *	driverID	driver ID as assigned by LL
 *	channel		channel number
 *	ack		if != 0 LL wants to be notified on completion via
 *			statcallb(ISDN_STAT_BSENT)
 *	skb		skb containing data to send
 * return value:
 *	number of accepted bytes
 *	0 if temporarily unable to accept data (out of buffer space)
 *	<0 on error (eg. -EINVAL)
 */
static int writebuf_from_LL(int driverID, int channel, int ack,
			    struct sk_buff *skb)
{
	struct cardstate *cs;
	struct bc_state *bcs;
	unsigned len;
	unsigned skblen;

	if (!(cs = gigaset_get_cs_by_id(driverID))) {
		err("%s: invalid driver ID (%d)", __func__, driverID);
		return -ENODEV;
	}
	if (channel < 0 || channel >= cs->channels) {
		err("%s: invalid channel ID (%d)", __func__, channel);
		return -ENODEV;
	}
	bcs = &cs->bcs[channel];
	len = skb->len;

	gig_dbg(DEBUG_LLDATA,
		"Receiving data from LL (id: %d, ch: %d, ack: %d, sz: %d)",
		driverID, channel, ack, len);

	if (!len) {
		if (ack)
			notice("%s: not ACKing empty packet", __func__);
		return 0;
	}
	if (len > MAX_BUF_SIZE) {
		err("%s: packet too large (%d bytes)", __func__, len);
		return -EINVAL;
	}

	skblen = ack ? len : 0;
	skb->head[0] = skblen & 0xff;
	skb->head[1] = skblen >> 8;
	gig_dbg(DEBUG_MCMD, "skb: len=%u, skblen=%u: %02x %02x",
		len, skblen, (unsigned) skb->head[0], (unsigned) skb->head[1]);

	/* pass to device-specific module */
	return cs->ops->send_skb(bcs, skb);
}

void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb)
{
	unsigned len;
	isdn_ctrl response;

	++bcs->trans_up;

	if (skb->len)
		dev_warn(bcs->cs->dev, "%s: skb->len==%d\n",
			 __func__, skb->len);

	len = (unsigned char) skb->head[0] |
	      (unsigned) (unsigned char) skb->head[1] << 8;
	if (len) {
		gig_dbg(DEBUG_MCMD, "ACKing to LL (id: %d, ch: %d, sz: %u)",
			bcs->cs->myid, bcs->channel, len);

		response.driver = bcs->cs->myid;
		response.command = ISDN_STAT_BSENT;
		response.arg = bcs->channel;
		response.parm.length = len;
		bcs->cs->iif.statcallb(&response);
	}
}
EXPORT_SYMBOL_GPL(gigaset_skb_sent);

/* This function will be called by LL to send commands
 * NOTE: LL ignores the returned value, for commands other than ISDN_CMD_IOCTL,
 * so don't put too much effort into it.
 */
static int command_from_LL(isdn_ctrl *cntrl)
{
	struct cardstate *cs = gigaset_get_cs_by_id(cntrl->driver);
	//isdn_ctrl response;
	//unsigned long flags;
	struct bc_state *bcs;
	int retval = 0;
	struct setup_parm *sp;
	unsigned param;
	unsigned long flags;

	gigaset_debugdrivers();

	if (!cs) {
		warn("LL tried to access unknown device with nr. %d",
		     cntrl->driver);
		return -ENODEV;
	}

	switch (cntrl->command) {
	case ISDN_CMD_IOCTL:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_IOCTL (driver: %d, arg: %ld)",
			cntrl->driver, cntrl->arg);

		warn("ISDN_CMD_IOCTL is not supported.");
		return -EINVAL;

	case ISDN_CMD_DIAL:
		gig_dbg(DEBUG_ANY,
			"ISDN_CMD_DIAL (driver: %d, ch: %ld, "
			"phone: %s, ownmsn: %s, si1: %d, si2: %d)",
			cntrl->driver, cntrl->arg,
			cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn,
			cntrl->parm.setup.si1, cntrl->parm.setup.si2);

		if (cntrl->arg >= cs->channels) {
			err("ISDN_CMD_DIAL: invalid channel (%d)",
			    (int) cntrl->arg);
			return -EINVAL;
		}

		bcs = cs->bcs + cntrl->arg;

		if (!gigaset_get_channel(bcs)) {
			err("ISDN_CMD_DIAL: channel not free");
			return -EBUSY;
		}

		sp = kmalloc(sizeof *sp, GFP_ATOMIC);
		if (!sp) {
			gigaset_free_channel(bcs);
			err("ISDN_CMD_DIAL: out of memory");
			return -ENOMEM;
		}
		*sp = cntrl->parm.setup;

		spin_lock_irqsave(&cs->lock, flags);
		param = bcs->at_state.seq_index;
		spin_unlock_irqrestore(&cs->lock, flags);

		if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp, param,
				       NULL)) {
			//FIXME what should we do?
			kfree(sp);
			gigaset_free_channel(bcs);
			return -ENOMEM;
		}

		gig_dbg(DEBUG_CMD, "scheduling DIAL");
		gigaset_schedule_event(cs);
		break;
	case ISDN_CMD_ACCEPTD: //FIXME
		gig_dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTD");

		if (cntrl->arg >= cs->channels) {
			err("ISDN_CMD_ACCEPTD: invalid channel (%d)",
			    (int) cntrl->arg);
			return -EINVAL;
		}

		if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
				       EV_ACCEPT, NULL, 0, NULL)) {
			//FIXME what should we do?
			return -ENOMEM;
		}

		gig_dbg(DEBUG_CMD, "scheduling ACCEPT");
		gigaset_schedule_event(cs);

		break;
	case ISDN_CMD_ACCEPTB:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTB");
		break;
	case ISDN_CMD_HANGUP:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_HANGUP (ch: %d)",
			(int) cntrl->arg);

		if (cntrl->arg >= cs->channels) {
			err("ISDN_CMD_HANGUP: invalid channel (%u)",
			    (unsigned) cntrl->arg);
			return -EINVAL;
		}

		if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
				       EV_HUP, NULL, 0, NULL)) {
			//FIXME what should we do?
			return -ENOMEM;
		}

		gig_dbg(DEBUG_CMD, "scheduling HUP");
		gigaset_schedule_event(cs);

		break;
	case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */ //FIXME
		gig_dbg(DEBUG_ANY, "ISDN_CMD_CLREAZ");
		break;
	case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */ //FIXME
		gig_dbg(DEBUG_ANY,
			"ISDN_CMD_SETEAZ (id: %d, ch: %ld, number: %s)",
			cntrl->driver, cntrl->arg, cntrl->parm.num);
		break;
	case ISDN_CMD_SETL2: /* Set L2 to given protocol */
		gig_dbg(DEBUG_ANY, "ISDN_CMD_SETL2 (ch: %ld, proto: %lx)",
			cntrl->arg & 0xff, (cntrl->arg >> 8));

		if ((cntrl->arg & 0xff) >= cs->channels) {
			err("ISDN_CMD_SETL2: invalid channel (%u)",
			    (unsigned) cntrl->arg & 0xff);
			return -EINVAL;
		}

		if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg & 0xff].at_state,
				       EV_PROTO_L2, NULL, cntrl->arg >> 8,
				       NULL)) {
			//FIXME what should we do?
			return -ENOMEM;
		}

		gig_dbg(DEBUG_CMD, "scheduling PROTO_L2");
		gigaset_schedule_event(cs);
		break;
	case ISDN_CMD_SETL3: /* Set L3 to given protocol */
		gig_dbg(DEBUG_ANY, "ISDN_CMD_SETL3 (ch: %ld, proto: %lx)",
			cntrl->arg & 0xff, (cntrl->arg >> 8));

		if ((cntrl->arg & 0xff) >= cs->channels) {
			err("ISDN_CMD_SETL3: invalid channel (%u)",
			    (unsigned) cntrl->arg & 0xff);
			return -EINVAL;
		}

		if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) {
			err("ISDN_CMD_SETL3: invalid protocol %lu",
			    cntrl->arg >> 8);
			return -EINVAL;
		}

		break;
	case ISDN_CMD_PROCEED:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_PROCEED"); //FIXME
		break;
	case ISDN_CMD_ALERT:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_ALERT"); //FIXME
		if (cntrl->arg >= cs->channels) {
			err("ISDN_CMD_ALERT: invalid channel (%d)",
			    (int) cntrl->arg);
			return -EINVAL;
		}
		//bcs = cs->bcs + cntrl->arg;
		//bcs->proto2 = -1;
		// FIXME
		break;
	case ISDN_CMD_REDIR:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_REDIR"); //FIXME
		break;
	case ISDN_CMD_PROT_IO:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_PROT_IO");
		break;
	case ISDN_CMD_FAXCMD:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_FAXCMD");
		break;
	case ISDN_CMD_GETL2:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_GETL2");
		break;
	case ISDN_CMD_GETL3:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_GETL3");
		break;
	case ISDN_CMD_GETEAZ:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_GETEAZ");
		break;
	case ISDN_CMD_SETSIL:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_SETSIL");
		break;
	case ISDN_CMD_GETSIL:
		gig_dbg(DEBUG_ANY, "ISDN_CMD_GETSIL");
		break;
	default:
		err("unknown command %d from LL", cntrl->command);
		return -EINVAL;
	}

	return retval;
}

void gigaset_i4l_cmd(struct cardstate *cs, int cmd)
{
	isdn_ctrl command;

	command.driver = cs->myid;
	command.command = cmd;
	command.arg = 0;
	cs->iif.statcallb(&command);
}

void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd)
{
	isdn_ctrl command;

	command.driver = bcs->cs->myid;
	command.command = cmd;
	command.arg = bcs->channel;
	bcs->cs->iif.statcallb(&command);
}

int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data)
{
	struct bc_state *bcs = at_state->bcs;
	unsigned proto;
	const char *bc;
	size_t length[AT_NUM];
	size_t l;
	int i;
	struct setup_parm *sp = data;

	switch (bcs->proto2) {
	case ISDN_PROTO_L2_HDLC:
		proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
		break;
	case ISDN_PROTO_L2_TRANS:
		proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
		break;
	default:
		dev_err(bcs->cs->dev, "%s: invalid L2 protocol: %u\n",
			__func__, bcs->proto2);
		return -EINVAL;
	}

	switch (sp->si1) {
	case 1:		/* audio */
		bc = "9090A3";	/* 3.1 kHz audio, A-law */
		break;
	case 7:		/* data */
	default:	/* hope the app knows what it is doing */
		bc = "8890";	/* unrestricted digital information */
	}
	//FIXME add missing si1 values from 1TR6, inspect si2, set HLC/LLC

	length[AT_DIAL ] = 1 + strlen(sp->phone) + 1 + 1;
	l = strlen(sp->eazmsn);
	length[AT_MSN  ] = l ? 6 + l + 1 + 1 : 0;
	length[AT_BC   ] = 5 + strlen(bc) + 1 + 1;
	length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
	length[AT_ISO  ] = 6 + 1 + 1 + 1; /* channel: 1 character */
	length[AT_TYPE ] = 6 + 1 + 1 + 1; /* call type: 1 character */
	length[AT_HLC  ] = 0;

	for (i = 0; i < AT_NUM; ++i) {
		kfree(bcs->commands[i]);
		bcs->commands[i] = NULL;
		if (length[i] &&
		    !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
			dev_err(bcs->cs->dev, "out of memory\n");
			return -ENOMEM;
		}
	}

	/* type = 1: extern, 0: intern, 2: recall, 3: door, 4: centrex */
	if (sp->phone[0] == '*' && sp->phone[1] == '*') {
		/* internal call: translate ** prefix to CTP value */
		snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
			 "D%s\r", sp->phone+2);
		strncpy(bcs->commands[AT_TYPE], "^SCTP=0\r", length[AT_TYPE]);
	} else {
		snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
			 "D%s\r", sp->phone);
		strncpy(bcs->commands[AT_TYPE], "^SCTP=1\r", length[AT_TYPE]);
	}

	if (bcs->commands[AT_MSN])
		snprintf(bcs->commands[AT_MSN], length[AT_MSN],
			 "^SMSN=%s\r", sp->eazmsn);
	snprintf(bcs->commands[AT_BC   ], length[AT_BC   ],
		 "^SBC=%s\r", bc);
	snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
		 "^SBPR=%u\r", proto);
	snprintf(bcs->commands[AT_ISO  ], length[AT_ISO  ],
		 "^SISO=%u\r", (unsigned)bcs->channel + 1);

	return 0;
}

int gigaset_isdn_setup_accept(struct at_state_t *at_state)
{
	unsigned proto;
	size_t length[AT_NUM];
	int i;
	struct bc_state *bcs = at_state->bcs;

	switch (bcs->proto2) {
	case ISDN_PROTO_L2_HDLC:
		proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
		break;
	case ISDN_PROTO_L2_TRANS:
		proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
		break;
	default:
		dev_err(at_state->cs->dev, "%s: invalid protocol: %u\n",
			__func__, bcs->proto2);
		return -EINVAL;
	}

	length[AT_DIAL ] = 0;
	length[AT_MSN  ] = 0;
	length[AT_BC   ] = 0;
	length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
	length[AT_ISO  ] = 6 + 1 + 1 + 1; /* channel: 1 character */
	length[AT_TYPE ] = 0;
	length[AT_HLC  ] = 0;

	for (i = 0; i < AT_NUM; ++i) {
		kfree(bcs->commands[i]);
		bcs->commands[i] = NULL;
		if (length[i] &&
		    !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
			dev_err(at_state->cs->dev, "out of memory\n");
			return -ENOMEM;
		}
	}

	snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
		 "^SBPR=%u\r", proto);
	snprintf(bcs->commands[AT_ISO  ], length[AT_ISO  ],
		 "^SISO=%u\r", (unsigned) bcs->channel + 1);

	return 0;
}

int gigaset_isdn_icall(struct at_state_t *at_state)
{
	struct cardstate *cs = at_state->cs;
	struct bc_state *bcs = at_state->bcs;
	isdn_ctrl response;
	int retval;

	/* fill ICALL structure */
	response.parm.setup.si1 = 0;	/* default: unknown */
	response.parm.setup.si2 = 0;
	response.parm.setup.screen = 0;	//FIXME how to set these?
	response.parm.setup.plan = 0;
	if (!at_state->str_var[STR_ZBC]) {
		/* no BC (internal call): assume speech, A-law */
		response.parm.setup.si1 = 1;
	} else if (!strcmp(at_state->str_var[STR_ZBC], "8890")) {
		/* unrestricted digital information */
		response.parm.setup.si1 = 7;
	} else if (!strcmp(at_state->str_var[STR_ZBC], "8090A3")) {
		/* speech, A-law */
		response.parm.setup.si1 = 1;
	} else if (!strcmp(at_state->str_var[STR_ZBC], "9090A3")) {
		/* 3,1 kHz audio, A-law */
		response.parm.setup.si1 = 1;
		response.parm.setup.si2 = 2;
	} else {
		dev_warn(cs->dev, "RING ignored - unsupported BC %s\n",
		     at_state->str_var[STR_ZBC]);
		return ICALL_IGNORE;
	}
	if (at_state->str_var[STR_NMBR]) {
		strncpy(response.parm.setup.phone, at_state->str_var[STR_NMBR],
			sizeof response.parm.setup.phone - 1);
		response.parm.setup.phone[sizeof response.parm.setup.phone - 1] = 0;
	} else
		response.parm.setup.phone[0] = 0;
	if (at_state->str_var[STR_ZCPN]) {
		strncpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN],
			sizeof response.parm.setup.eazmsn - 1);
		response.parm.setup.eazmsn[sizeof response.parm.setup.eazmsn - 1] = 0;
	} else
		response.parm.setup.eazmsn[0] = 0;

	if (!bcs) {
		dev_notice(cs->dev, "no channel for incoming call\n");
		response.command = ISDN_STAT_ICALLW;
		response.arg = 0; //FIXME
	} else {
		gig_dbg(DEBUG_CMD, "Sending ICALL");
		response.command = ISDN_STAT_ICALL;
		response.arg = bcs->channel; //FIXME
	}
	response.driver = cs->myid;
	retval = cs->iif.statcallb(&response);
	gig_dbg(DEBUG_CMD, "Response: %d", retval);
	switch (retval) {
	case 0:	/* no takers */
		return ICALL_IGNORE;
	case 1:	/* alerting */
		bcs->chstate |= CHS_NOTIFY_LL;
		return ICALL_ACCEPT;
	case 2:	/* reject */
		return ICALL_REJECT;
	case 3:	/* incomplete */
		dev_warn(cs->dev,
		       "LL requested unsupported feature: Incomplete Number\n");
		return ICALL_IGNORE;
	case 4:	/* proceeding */
		/* Gigaset will send ALERTING anyway.
		 * There doesn't seem to be a way to avoid this.
		 */
		return ICALL_ACCEPT;
	case 5:	/* deflect */
		dev_warn(cs->dev,
			 "LL requested unsupported feature: Call Deflection\n");
		return ICALL_IGNORE;
	default:
		dev_err(cs->dev, "LL error %d on ICALL\n", retval);
		return ICALL_IGNORE;
	}
}

/* Set Callback function pointer */
int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid)
{
	isdn_if *iif = &cs->iif;

	gig_dbg(DEBUG_ANY, "Register driver capabilities to LL");

	//iif->id[sizeof(iif->id) - 1]=0;
	//strncpy(iif->id, isdnid, sizeof(iif->id) - 1);
	if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index)
	    >= sizeof iif->id)
		return -ENOMEM; //FIXME EINVAL/...??

	iif->owner = THIS_MODULE;
	iif->channels = cs->channels;
	iif->maxbufsize = MAX_BUF_SIZE;
	iif->features = ISDN_FEATURE_L2_TRANS |
		ISDN_FEATURE_L2_HDLC |
#ifdef GIG_X75
		ISDN_FEATURE_L2_X75I |
#endif
		ISDN_FEATURE_L3_TRANS |
		ISDN_FEATURE_P_EURO;
	iif->hl_hdrlen = HW_HDR_LEN;		/* Area for storing ack */
	iif->command = command_from_LL;
	iif->writebuf_skb = writebuf_from_LL;
	iif->writecmd = NULL;			/* Don't support isdnctrl */
	iif->readstat = NULL;			/* Don't support isdnctrl */
	iif->rcvcallb_skb = NULL;		/* Will be set by LL */
	iif->statcallb = NULL;			/* Will be set by LL */

	if (!register_isdn(iif))
		return 0;

	cs->myid = iif->channels;		/* Set my device id */
	return 1;
}
Commit	Line	Data
3c66a225 HL	1	/*
	2	* Stuff used by all variants of the driver
	3	*
70440cf2 TS	4	* Copyright (c) 2001 by Stefan Eilers,
	5	* Hansjoerg Lipp <hjlipp@web.de>,
	6	* Tilman Schmidt <tilman@imap.cc>.
3c66a225 HL	7	*
	8	* =====================================================================
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License as
	11	* published by the Free Software Foundation; either version 2 of
	12	* the License, or (at your option) any later version.
	13	* =====================================================================
3c66a225 HL	14	*/
	15
	16	#include "gigaset.h"
	17
784d5858	18	/* == Handling of I4L IO =====================================================*/
3c66a225 HL	19
	20	/* writebuf_from_LL
	21	* called by LL to transmit data on an open channel
	22	* inserts the buffer data into the send queue and starts the transmission
	23	* Note that this operation must not sleep!
	24	* When the buffer is processed completely, gigaset_skb_sent() should be called.
	25	* parameters:
	26	* driverID driver ID as assigned by LL
	27	* channel channel number
917f5085 TS	28	* ack if != 0 LL wants to be notified on completion via
917f5085 TS	29	* statcallb(ISDN_STAT_BSENT)
3c66a225 HL	30	* skb skb containing data to send
	31	* return value:
	32	* number of accepted bytes
	33	* 0 if temporarily unable to accept data (out of buffer space)
	34	* <0 on error (eg. -EINVAL)
	35	*/
784d5858 TS	36	static int writebuf_from_LL(int driverID, int channel, int ack,
784d5858 TS	37	struct sk_buff *skb)
3c66a225 HL	38	{
	39	struct cardstate *cs;
	40	struct bc_state *bcs;
	41	unsigned len;
	42	unsigned skblen;
	43
	44	if (!(cs = gigaset_get_cs_by_id(driverID))) {
	45	err("%s: invalid driver ID (%d)", __func__, driverID);
	46	return -ENODEV;
	47	}
	48	if (channel < 0 \|\| channel >= cs->channels) {
	49	err("%s: invalid channel ID (%d)", __func__, channel);
	50	return -ENODEV;
	51	}
	52	bcs = &cs->bcs[channel];
	53	len = skb->len;
	54
784d5858 TS	55	gig_dbg(DEBUG_LLDATA,
	56	"Receiving data from LL (id: %d, ch: %d, ack: %d, sz: %d)",
	57	driverID, channel, ack, len);
	58
3c66a225 HL	59	if (!len) {
3c66a225 HL	60	if (ack)
784d5858	61	notice("%s: not ACKing empty packet", __func__);
3c66a225 HL	62	return 0;
	63	}
	64	if (len > MAX_BUF_SIZE) {
784d5858	65	err("%s: packet too large (%d bytes)", __func__, len);
3c66a225 HL	66	return -EINVAL;
	67	}
	68
3c66a225 HL	69	skblen = ack ? len : 0;
	70	skb->head[0] = skblen & 0xff;
	71	skb->head[1] = skblen >> 8;
784d5858 TS	72	gig_dbg(DEBUG_MCMD, "skb: len=%u, skblen=%u: %02x %02x",
784d5858 TS	73	len, skblen, (unsigned) skb->head[0], (unsigned) skb->head[1]);
3c66a225 HL	74
3c66a225 HL	75	/* pass to device-specific module */
73a88814	76	return cs->ops->send_skb(bcs, skb);
3c66a225 HL	77	}
	78
	79	void gigaset_skb_sent(struct bc_state bcs, struct sk_buff skb)
	80	{
	81	unsigned len;
	82	isdn_ctrl response;
	83
	84	++bcs->trans_up;
	85
	86	if (skb->len)
784d5858 TS	87	dev_warn(bcs->cs->dev, "%s: skb->len==%d\n",
784d5858 TS	88	__func__, skb->len);
3c66a225 HL	89
	90	len = (unsigned char) skb->head[0] \|
	91	(unsigned) (unsigned char) skb->head[1] << 8;
	92	if (len) {
784d5858 TS	93	gig_dbg(DEBUG_MCMD, "ACKing to LL (id: %d, ch: %d, sz: %u)",
784d5858 TS	94	bcs->cs->myid, bcs->channel, len);
3c66a225 HL	95
	96	response.driver = bcs->cs->myid;
	97	response.command = ISDN_STAT_BSENT;
	98	response.arg = bcs->channel;
	99	response.parm.length = len;
	100	bcs->cs->iif.statcallb(&response);
	101	}
	102	}
	103	EXPORT_SYMBOL_GPL(gigaset_skb_sent);
	104
	105	/* This function will be called by LL to send commands
	106	* NOTE: LL ignores the returned value, for commands other than ISDN_CMD_IOCTL,
	107	* so don't put too much effort into it.
	108	*/
	109	static int command_from_LL(isdn_ctrl *cntrl)
	110	{
	111	struct cardstate *cs = gigaset_get_cs_by_id(cntrl->driver);
	112	//isdn_ctrl response;
	113	//unsigned long flags;
	114	struct bc_state *bcs;
	115	int retval = 0;
	116	struct setup_parm *sp;
69049cc8 TS	117	unsigned param;
69049cc8 TS	118	unsigned long flags;
3c66a225	119
3c66a225 HL	120	gigaset_debugdrivers();
3c66a225 HL	121
69049cc8	122	if (!cs) {
3c66a225 HL	123	warn("LL tried to access unknown device with nr. %d",
	124	cntrl->driver);
	125	return -ENODEV;
	126	}
	127
	128	switch (cntrl->command) {
	129	case ISDN_CMD_IOCTL:
784d5858 TS	130	gig_dbg(DEBUG_ANY, "ISDN_CMD_IOCTL (driver: %d, arg: %ld)",
784d5858 TS	131	cntrl->driver, cntrl->arg);
3c66a225 HL	132
	133	warn("ISDN_CMD_IOCTL is not supported.");
	134	return -EINVAL;
	135
	136	case ISDN_CMD_DIAL:
784d5858 TS	137	gig_dbg(DEBUG_ANY,
	138	"ISDN_CMD_DIAL (driver: %d, ch: %ld, "
	139	"phone: %s, ownmsn: %s, si1: %d, si2: %d)",
	140	cntrl->driver, cntrl->arg,
	141	cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn,
	142	cntrl->parm.setup.si1, cntrl->parm.setup.si2);
3c66a225 HL	143
3c66a225 HL	144	if (cntrl->arg >= cs->channels) {
784d5858 TS	145	err("ISDN_CMD_DIAL: invalid channel (%d)",
784d5858 TS	146	(int) cntrl->arg);
3c66a225 HL	147	return -EINVAL;
	148	}
	149
	150	bcs = cs->bcs + cntrl->arg;
	151
	152	if (!gigaset_get_channel(bcs)) {
784d5858	153	err("ISDN_CMD_DIAL: channel not free");
3c66a225 HL	154	return -EBUSY;
	155	}
	156
	157	sp = kmalloc(sizeof *sp, GFP_ATOMIC);
	158	if (!sp) {
	159	gigaset_free_channel(bcs);
	160	err("ISDN_CMD_DIAL: out of memory");
	161	return -ENOMEM;
	162	}
	163	*sp = cntrl->parm.setup;
	164
69049cc8 TS	165	spin_lock_irqsave(&cs->lock, flags);
	166	param = bcs->at_state.seq_index;
	167	spin_unlock_irqrestore(&cs->lock, flags);
	168
	169	if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp, param,
784d5858	170	NULL)) {
3c66a225 HL	171	//FIXME what should we do?
	172	kfree(sp);
	173	gigaset_free_channel(bcs);
	174	return -ENOMEM;
	175	}
	176
784d5858	177	gig_dbg(DEBUG_CMD, "scheduling DIAL");
3c66a225 HL	178	gigaset_schedule_event(cs);
	179	break;
	180	case ISDN_CMD_ACCEPTD: //FIXME
784d5858	181	gig_dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTD");
3c66a225 HL	182
3c66a225 HL	183	if (cntrl->arg >= cs->channels) {
784d5858 TS	184	err("ISDN_CMD_ACCEPTD: invalid channel (%d)",
784d5858 TS	185	(int) cntrl->arg);
3c66a225 HL	186	return -EINVAL;
	187	}
	188
	189	if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
784d5858	190	EV_ACCEPT, NULL, 0, NULL)) {
3c66a225 HL	191	//FIXME what should we do?
	192	return -ENOMEM;
	193	}
	194
784d5858	195	gig_dbg(DEBUG_CMD, "scheduling ACCEPT");
3c66a225 HL	196	gigaset_schedule_event(cs);
	197
	198	break;
	199	case ISDN_CMD_ACCEPTB:
784d5858	200	gig_dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTB");
3c66a225 HL	201	break;
3c66a225 HL	202	case ISDN_CMD_HANGUP:
784d5858 TS	203	gig_dbg(DEBUG_ANY, "ISDN_CMD_HANGUP (ch: %d)",
784d5858 TS	204	(int) cntrl->arg);
3c66a225 HL	205
	206	if (cntrl->arg >= cs->channels) {
	207	err("ISDN_CMD_HANGUP: invalid channel (%u)",
	208	(unsigned) cntrl->arg);
	209	return -EINVAL;
	210	}
	211
	212	if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
784d5858	213	EV_HUP, NULL, 0, NULL)) {
3c66a225 HL	214	//FIXME what should we do?
	215	return -ENOMEM;
	216	}
	217
784d5858	218	gig_dbg(DEBUG_CMD, "scheduling HUP");
3c66a225 HL	219	gigaset_schedule_event(cs);
	220
	221	break;
917f5085	222	case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */ //FIXME
784d5858	223	gig_dbg(DEBUG_ANY, "ISDN_CMD_CLREAZ");
3c66a225	224	break;
917f5085	225	case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */ //FIXME
784d5858 TS	226	gig_dbg(DEBUG_ANY,
	227	"ISDN_CMD_SETEAZ (id: %d, ch: %ld, number: %s)",
	228	cntrl->driver, cntrl->arg, cntrl->parm.num);
3c66a225	229	break;
917f5085	230	case ISDN_CMD_SETL2: /* Set L2 to given protocol */
784d5858 TS	231	gig_dbg(DEBUG_ANY, "ISDN_CMD_SETL2 (ch: %ld, proto: %lx)",
784d5858 TS	232	cntrl->arg & 0xff, (cntrl->arg >> 8));
3c66a225 HL	233
3c66a225 HL	234	if ((cntrl->arg & 0xff) >= cs->channels) {
784d5858	235	err("ISDN_CMD_SETL2: invalid channel (%u)",
3c66a225 HL	236	(unsigned) cntrl->arg & 0xff);
	237	return -EINVAL;
	238	}
	239
	240	if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg & 0xff].at_state,
784d5858 TS	241	EV_PROTO_L2, NULL, cntrl->arg >> 8,
784d5858 TS	242	NULL)) {
3c66a225 HL	243	//FIXME what should we do?
	244	return -ENOMEM;
	245	}
	246
784d5858	247	gig_dbg(DEBUG_CMD, "scheduling PROTO_L2");
3c66a225 HL	248	gigaset_schedule_event(cs);
3c66a225 HL	249	break;
917f5085	250	case ISDN_CMD_SETL3: /* Set L3 to given protocol */
784d5858 TS	251	gig_dbg(DEBUG_ANY, "ISDN_CMD_SETL3 (ch: %ld, proto: %lx)",
784d5858 TS	252	cntrl->arg & 0xff, (cntrl->arg >> 8));
3c66a225 HL	253
3c66a225 HL	254	if ((cntrl->arg & 0xff) >= cs->channels) {
784d5858	255	err("ISDN_CMD_SETL3: invalid channel (%u)",
3c66a225 HL	256	(unsigned) cntrl->arg & 0xff);
	257	return -EINVAL;
	258	}
	259
	260	if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) {
784d5858 TS	261	err("ISDN_CMD_SETL3: invalid protocol %lu",
784d5858 TS	262	cntrl->arg >> 8);
3c66a225 HL	263	return -EINVAL;
	264	}
	265
	266	break;
	267	case ISDN_CMD_PROCEED:
784d5858	268	gig_dbg(DEBUG_ANY, "ISDN_CMD_PROCEED"); //FIXME
3c66a225 HL	269	break;
3c66a225 HL	270	case ISDN_CMD_ALERT:
784d5858	271	gig_dbg(DEBUG_ANY, "ISDN_CMD_ALERT"); //FIXME
3c66a225	272	if (cntrl->arg >= cs->channels) {
784d5858 TS	273	err("ISDN_CMD_ALERT: invalid channel (%d)",
784d5858 TS	274	(int) cntrl->arg);
3c66a225 HL	275	return -EINVAL;
	276	}
	277	//bcs = cs->bcs + cntrl->arg;
	278	//bcs->proto2 = -1;
	279	// FIXME
	280	break;
	281	case ISDN_CMD_REDIR:
784d5858	282	gig_dbg(DEBUG_ANY, "ISDN_CMD_REDIR"); //FIXME
3c66a225 HL	283	break;
3c66a225 HL	284	case ISDN_CMD_PROT_IO:
784d5858	285	gig_dbg(DEBUG_ANY, "ISDN_CMD_PROT_IO");
3c66a225 HL	286	break;
3c66a225 HL	287	case ISDN_CMD_FAXCMD:
784d5858	288	gig_dbg(DEBUG_ANY, "ISDN_CMD_FAXCMD");
3c66a225 HL	289	break;
3c66a225 HL	290	case ISDN_CMD_GETL2:
784d5858	291	gig_dbg(DEBUG_ANY, "ISDN_CMD_GETL2");
3c66a225 HL	292	break;
3c66a225 HL	293	case ISDN_CMD_GETL3:
784d5858	294	gig_dbg(DEBUG_ANY, "ISDN_CMD_GETL3");
3c66a225 HL	295	break;
3c66a225 HL	296	case ISDN_CMD_GETEAZ:
784d5858	297	gig_dbg(DEBUG_ANY, "ISDN_CMD_GETEAZ");
3c66a225 HL	298	break;
3c66a225 HL	299	case ISDN_CMD_SETSIL:
784d5858	300	gig_dbg(DEBUG_ANY, "ISDN_CMD_SETSIL");
3c66a225 HL	301	break;
3c66a225 HL	302	case ISDN_CMD_GETSIL:
784d5858	303	gig_dbg(DEBUG_ANY, "ISDN_CMD_GETSIL");
3c66a225 HL	304	break;
3c66a225 HL	305	default:
784d5858	306	err("unknown command %d from LL", cntrl->command);
3c66a225 HL	307	return -EINVAL;
	308	}
	309
	310	return retval;
	311	}
	312
	313	void gigaset_i4l_cmd(struct cardstate *cs, int cmd)
	314	{
	315	isdn_ctrl command;
	316
	317	command.driver = cs->myid;
	318	command.command = cmd;
	319	command.arg = 0;
	320	cs->iif.statcallb(&command);
	321	}
	322
	323	void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd)
	324	{
	325	isdn_ctrl command;
	326
	327	command.driver = bcs->cs->myid;
	328	command.command = cmd;
	329	command.arg = bcs->channel;
	330	bcs->cs->iif.statcallb(&command);
	331	}
	332
	333	int gigaset_isdn_setup_dial(struct at_state_t at_state, void data)
	334	{
	335	struct bc_state *bcs = at_state->bcs;
	336	unsigned proto;
	337	const char *bc;
	338	size_t length[AT_NUM];
	339	size_t l;
	340	int i;
	341	struct setup_parm *sp = data;
	342
	343	switch (bcs->proto2) {
	344	case ISDN_PROTO_L2_HDLC:
	345	proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
	346	break;
	347	case ISDN_PROTO_L2_TRANS:
	348	proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
	349	break;
	350	default:
784d5858 TS	351	dev_err(bcs->cs->dev, "%s: invalid L2 protocol: %u\n",
784d5858 TS	352	__func__, bcs->proto2);
3c66a225 HL	353	return -EINVAL;
	354	}
	355
	356	switch (sp->si1) {
	357	case 1: /* audio */
	358	bc = "9090A3"; /* 3.1 kHz audio, A-law */
	359	break;
	360	case 7: /* data */
	361	default: /* hope the app knows what it is doing */
	362	bc = "8890"; /* unrestricted digital information */
	363	}
	364	//FIXME add missing si1 values from 1TR6, inspect si2, set HLC/LLC
	365
	366	length[AT_DIAL ] = 1 + strlen(sp->phone) + 1 + 1;
	367	l = strlen(sp->eazmsn);
	368	length[AT_MSN ] = l ? 6 + l + 1 + 1 : 0;
	369	length[AT_BC ] = 5 + strlen(bc) + 1 + 1;
	370	length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
	371	length[AT_ISO ] = 6 + 1 + 1 + 1; /* channel: 1 character */
	372	length[AT_TYPE ] = 6 + 1 + 1 + 1; /* call type: 1 character */
	373	length[AT_HLC ] = 0;
	374
	375	for (i = 0; i < AT_NUM; ++i) {
	376	kfree(bcs->commands[i]);
	377	bcs->commands[i] = NULL;
	378	if (length[i] &&
	379	!(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
784d5858	380	dev_err(bcs->cs->dev, "out of memory\n");
3c66a225 HL	381	return -ENOMEM;
	382	}
	383	}
	384
	385	/* type = 1: extern, 0: intern, 2: recall, 3: door, 4: centrex */
	386	if (sp->phone[0] == '' && sp->phone[1] == '') {
	387	/* internal call: translate ** prefix to CTP value */
	388	snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
	389	"D%s\r", sp->phone+2);
	390	strncpy(bcs->commands[AT_TYPE], "^SCTP=0\r", length[AT_TYPE]);
	391	} else {
	392	snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
	393	"D%s\r", sp->phone);
	394	strncpy(bcs->commands[AT_TYPE], "^SCTP=1\r", length[AT_TYPE]);
	395	}
	396
	397	if (bcs->commands[AT_MSN])
917f5085 TS	398	snprintf(bcs->commands[AT_MSN], length[AT_MSN],
	399	"^SMSN=%s\r", sp->eazmsn);
	400	snprintf(bcs->commands[AT_BC ], length[AT_BC ],
	401	"^SBC=%s\r", bc);
	402	snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
	403	"^SBPR=%u\r", proto);
	404	snprintf(bcs->commands[AT_ISO ], length[AT_ISO ],
	405	"^SISO=%u\r", (unsigned)bcs->channel + 1);
3c66a225 HL	406
	407	return 0;
	408	}
	409
	410	int gigaset_isdn_setup_accept(struct at_state_t *at_state)
	411	{
	412	unsigned proto;
	413	size_t length[AT_NUM];
	414	int i;
	415	struct bc_state *bcs = at_state->bcs;
	416
	417	switch (bcs->proto2) {
	418	case ISDN_PROTO_L2_HDLC:
	419	proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
	420	break;
	421	case ISDN_PROTO_L2_TRANS:
	422	proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
	423	break;
	424	default:
784d5858 TS	425	dev_err(at_state->cs->dev, "%s: invalid protocol: %u\n",
784d5858 TS	426	__func__, bcs->proto2);
3c66a225 HL	427	return -EINVAL;
	428	}
	429
	430	length[AT_DIAL ] = 0;
	431	length[AT_MSN ] = 0;
	432	length[AT_BC ] = 0;
	433	length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
	434	length[AT_ISO ] = 6 + 1 + 1 + 1; /* channel: 1 character */
	435	length[AT_TYPE ] = 0;
	436	length[AT_HLC ] = 0;
	437
	438	for (i = 0; i < AT_NUM; ++i) {
	439	kfree(bcs->commands[i]);
	440	bcs->commands[i] = NULL;
	441	if (length[i] &&
	442	!(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
784d5858	443	dev_err(at_state->cs->dev, "out of memory\n");
3c66a225 HL	444	return -ENOMEM;
	445	}
	446	}
	447
917f5085 TS	448	snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
	449	"^SBPR=%u\r", proto);
	450	snprintf(bcs->commands[AT_ISO ], length[AT_ISO ],
	451	"^SISO=%u\r", (unsigned) bcs->channel + 1);
3c66a225 HL	452
	453	return 0;
	454	}
	455
	456	int gigaset_isdn_icall(struct at_state_t *at_state)
	457	{
	458	struct cardstate *cs = at_state->cs;
	459	struct bc_state *bcs = at_state->bcs;
	460	isdn_ctrl response;
	461	int retval;
	462
	463	/* fill ICALL structure */
	464	response.parm.setup.si1 = 0; /* default: unknown */
	465	response.parm.setup.si2 = 0;
	466	response.parm.setup.screen = 0; //FIXME how to set these?
	467	response.parm.setup.plan = 0;
	468	if (!at_state->str_var[STR_ZBC]) {
	469	/* no BC (internal call): assume speech, A-law */
	470	response.parm.setup.si1 = 1;
	471	} else if (!strcmp(at_state->str_var[STR_ZBC], "8890")) {
	472	/* unrestricted digital information */
	473	response.parm.setup.si1 = 7;
	474	} else if (!strcmp(at_state->str_var[STR_ZBC], "8090A3")) {
	475	/* speech, A-law */
	476	response.parm.setup.si1 = 1;
	477	} else if (!strcmp(at_state->str_var[STR_ZBC], "9090A3")) {
	478	/* 3,1 kHz audio, A-law */
	479	response.parm.setup.si1 = 1;
	480	response.parm.setup.si2 = 2;
	481	} else {
784d5858	482	dev_warn(cs->dev, "RING ignored - unsupported BC %s\n",
3c66a225 HL	483	at_state->str_var[STR_ZBC]);
	484	return ICALL_IGNORE;
	485	}
	486	if (at_state->str_var[STR_NMBR]) {
	487	strncpy(response.parm.setup.phone, at_state->str_var[STR_NMBR],
	488	sizeof response.parm.setup.phone - 1);
	489	response.parm.setup.phone[sizeof response.parm.setup.phone - 1] = 0;
	490	} else
	491	response.parm.setup.phone[0] = 0;
	492	if (at_state->str_var[STR_ZCPN]) {
	493	strncpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN],
	494	sizeof response.parm.setup.eazmsn - 1);
	495	response.parm.setup.eazmsn[sizeof response.parm.setup.eazmsn - 1] = 0;
	496	} else
	497	response.parm.setup.eazmsn[0] = 0;
	498
	499	if (!bcs) {
784d5858	500	dev_notice(cs->dev, "no channel for incoming call\n");
3c66a225 HL	501	response.command = ISDN_STAT_ICALLW;
	502	response.arg = 0; //FIXME
	503	} else {
784d5858	504	gig_dbg(DEBUG_CMD, "Sending ICALL");
3c66a225 HL	505	response.command = ISDN_STAT_ICALL;
	506	response.arg = bcs->channel; //FIXME
	507	}
	508	response.driver = cs->myid;
	509	retval = cs->iif.statcallb(&response);
784d5858	510	gig_dbg(DEBUG_CMD, "Response: %d", retval);
3c66a225 HL	511	switch (retval) {
	512	case 0: /* no takers */
	513	return ICALL_IGNORE;
	514	case 1: /* alerting */
	515	bcs->chstate \|= CHS_NOTIFY_LL;
	516	return ICALL_ACCEPT;
	517	case 2: /* reject */
	518	return ICALL_REJECT;
	519	case 3: /* incomplete */
784d5858 TS	520	dev_warn(cs->dev,
784d5858 TS	521	"LL requested unsupported feature: Incomplete Number\n");
3c66a225 HL	522	return ICALL_IGNORE;
	523	case 4: /* proceeding */
	524	/* Gigaset will send ALERTING anyway.
	525	* There doesn't seem to be a way to avoid this.
	526	*/
	527	return ICALL_ACCEPT;
	528	case 5: /* deflect */
784d5858 TS	529	dev_warn(cs->dev,
784d5858 TS	530	"LL requested unsupported feature: Call Deflection\n");
3c66a225 HL	531	return ICALL_IGNORE;
3c66a225 HL	532	default:
784d5858	533	dev_err(cs->dev, "LL error %d on ICALL\n", retval);
3c66a225 HL	534	return ICALL_IGNORE;
	535	}
	536	}
	537
	538	/* Set Callback function pointer */
	539	int gigaset_register_to_LL(struct cardstate cs, const char isdnid)
	540	{
	541	isdn_if *iif = &cs->iif;
	542
784d5858	543	gig_dbg(DEBUG_ANY, "Register driver capabilities to LL");
3c66a225 HL	544
	545	//iif->id[sizeof(iif->id) - 1]=0;
	546	//strncpy(iif->id, isdnid, sizeof(iif->id) - 1);
	547	if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index)
	548	>= sizeof iif->id)
	549	return -ENOMEM; //FIXME EINVAL/...??
	550
	551	iif->owner = THIS_MODULE;
917f5085	552	iif->channels = cs->channels;
3c66a225	553	iif->maxbufsize = MAX_BUF_SIZE;
917f5085	554	iif->features = ISDN_FEATURE_L2_TRANS \|
3c66a225 HL	555	ISDN_FEATURE_L2_HDLC \|
	556	#ifdef GIG_X75
	557	ISDN_FEATURE_L2_X75I \|
	558	#endif
	559	ISDN_FEATURE_L3_TRANS \|
	560	ISDN_FEATURE_P_EURO;
784d5858	561	iif->hl_hdrlen = HW_HDR_LEN; /* Area for storing ack */
3c66a225 HL	562	iif->command = command_from_LL;
3c66a225 HL	563	iif->writebuf_skb = writebuf_from_LL;
784d5858 TS	564	iif->writecmd = NULL; /* Don't support isdnctrl */
	565	iif->readstat = NULL; /* Don't support isdnctrl */
	566	iif->rcvcallb_skb = NULL; /* Will be set by LL */
	567	iif->statcallb = NULL; /* Will be set by LL */
3c66a225 HL	568
	569	if (!register_isdn(iif))
	570	return 0;
	571
784d5858	572	cs->myid = iif->channels; /* Set my device id */
3c66a225 HL	573	return 1;
3c66a225 HL	574	}