[deliverable/linux.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))) {
		pr_err("%s: invalid driver ID (%d)\n", __func__, driverID);
		return -ENODEV;
	}
	if (channel < 0 || channel >= cs->channels) {
		dev_err(cs->dev, "%s: invalid channel ID (%d)\n",
			__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)
			dev_notice(cs->dev, "%s: not ACKing empty packet\n",
				   __func__);
		return 0;
	}
	if (len > MAX_BUF_SIZE) {
		dev_err(cs->dev, "%s: packet too large (%d bytes)\n",
			__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);
	struct bc_state *bcs;
	int retval = 0;
	struct setup_parm *sp;

	gigaset_debugdrivers();

	if (!cs) {
		pr_err("%s: invalid driver ID (%d)\n", __func__, 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);

		dev_warn(cs->dev, "ISDN_CMD_IOCTL not supported\n");
		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) {
			dev_err(cs->dev,
				"ISDN_CMD_DIAL: invalid channel (%d)\n",
				(int) cntrl->arg);
			return -EINVAL;
		}

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

		if (!gigaset_get_channel(bcs)) {
			dev_err(cs->dev, "ISDN_CMD_DIAL: channel not free\n");
			return -EBUSY;
		}

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

		if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp,
				       bcs->at_state.seq_index, 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) {
			dev_err(cs->dev,
				"ISDN_CMD_ACCEPTD: invalid channel (%d)\n",
				(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) {
			dev_err(cs->dev,
				"ISDN_CMD_HANGUP: invalid channel (%d)\n",
				(int) 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) {
			dev_err(cs->dev,
				"ISDN_CMD_SETL2: invalid channel (%d)\n",
				(int) 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) {
			dev_err(cs->dev,
				"ISDN_CMD_SETL3: invalid channel (%d)\n",
				(int) cntrl->arg & 0xff);
			return -EINVAL;
		}

		if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) {
			dev_err(cs->dev,
				"ISDN_CMD_SETL3: invalid protocol %lu\n",
				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) {
			dev_err(cs->dev,
				"ISDN_CMD_ALERT: invalid channel (%d)\n",
				(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:
		dev_err(cs->dev, "unknown command %d from LL\n",
			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");

	if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index)
	    >= sizeof iif->id) {
		pr_err("ID too long: %s\n", isdnid);
		return 0;
	}

	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)) {
		pr_err("register_isdn failed\n");
		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))) {
c8770dca	45	pr_err("%s: invalid driver ID (%d)\n", __func__, driverID);
3c66a225 HL	46	return -ENODEV;
	47	}
	48	if (channel < 0 \|\| channel >= cs->channels) {
5002779d TS	49	dev_err(cs->dev, "%s: invalid channel ID (%d)\n",
5002779d TS	50	__func__, channel);
3c66a225 HL	51	return -ENODEV;
	52	}
	53	bcs = &cs->bcs[channel];
	54	len = skb->len;
	55
784d5858 TS	56	gig_dbg(DEBUG_LLDATA,
	57	"Receiving data from LL (id: %d, ch: %d, ack: %d, sz: %d)",
	58	driverID, channel, ack, len);
	59
3c66a225 HL	60	if (!len) {
3c66a225 HL	61	if (ack)
5002779d TS	62	dev_notice(cs->dev, "%s: not ACKing empty packet\n",
5002779d TS	63	__func__);
3c66a225 HL	64	return 0;
	65	}
	66	if (len > MAX_BUF_SIZE) {
5002779d TS	67	dev_err(cs->dev, "%s: packet too large (%d bytes)\n",
5002779d TS	68	__func__, len);
3c66a225 HL	69	return -EINVAL;
	70	}
	71
3c66a225 HL	72	skblen = ack ? len : 0;
	73	skb->head[0] = skblen & 0xff;
	74	skb->head[1] = skblen >> 8;
784d5858 TS	75	gig_dbg(DEBUG_MCMD, "skb: len=%u, skblen=%u: %02x %02x",
784d5858 TS	76	len, skblen, (unsigned) skb->head[0], (unsigned) skb->head[1]);
3c66a225 HL	77
3c66a225 HL	78	/* pass to device-specific module */
73a88814	79	return cs->ops->send_skb(bcs, skb);
3c66a225 HL	80	}
	81
	82	void gigaset_skb_sent(struct bc_state bcs, struct sk_buff skb)
	83	{
	84	unsigned len;
	85	isdn_ctrl response;
	86
	87	++bcs->trans_up;
	88
	89	if (skb->len)
784d5858 TS	90	dev_warn(bcs->cs->dev, "%s: skb->len==%d\n",
784d5858 TS	91	__func__, skb->len);
3c66a225 HL	92
	93	len = (unsigned char) skb->head[0] \|
	94	(unsigned) (unsigned char) skb->head[1] << 8;
	95	if (len) {
784d5858 TS	96	gig_dbg(DEBUG_MCMD, "ACKing to LL (id: %d, ch: %d, sz: %u)",
784d5858 TS	97	bcs->cs->myid, bcs->channel, len);
3c66a225 HL	98
	99	response.driver = bcs->cs->myid;
	100	response.command = ISDN_STAT_BSENT;
	101	response.arg = bcs->channel;
	102	response.parm.length = len;
	103	bcs->cs->iif.statcallb(&response);
	104	}
	105	}
	106	EXPORT_SYMBOL_GPL(gigaset_skb_sent);
	107
	108	/* This function will be called by LL to send commands
	109	* NOTE: LL ignores the returned value, for commands other than ISDN_CMD_IOCTL,
	110	* so don't put too much effort into it.
	111	*/
	112	static int command_from_LL(isdn_ctrl *cntrl)
	113	{
	114	struct cardstate *cs = gigaset_get_cs_by_id(cntrl->driver);
3c66a225 HL	115	struct bc_state *bcs;
	116	int retval = 0;
	117	struct setup_parm *sp;
	118
3c66a225 HL	119	gigaset_debugdrivers();
3c66a225 HL	120
69049cc8	121	if (!cs) {
c8770dca	122	pr_err("%s: invalid driver ID (%d)\n", __func__, cntrl->driver);
3c66a225 HL	123	return -ENODEV;
	124	}
	125
	126	switch (cntrl->command) {
	127	case ISDN_CMD_IOCTL:
784d5858 TS	128	gig_dbg(DEBUG_ANY, "ISDN_CMD_IOCTL (driver: %d, arg: %ld)",
784d5858 TS	129	cntrl->driver, cntrl->arg);
3c66a225	130
5002779d	131	dev_warn(cs->dev, "ISDN_CMD_IOCTL not supported\n");
3c66a225 HL	132	return -EINVAL;
	133
	134	case ISDN_CMD_DIAL:
784d5858 TS	135	gig_dbg(DEBUG_ANY,
	136	"ISDN_CMD_DIAL (driver: %d, ch: %ld, "
	137	"phone: %s, ownmsn: %s, si1: %d, si2: %d)",
	138	cntrl->driver, cntrl->arg,
	139	cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn,
	140	cntrl->parm.setup.si1, cntrl->parm.setup.si2);
3c66a225 HL	141
3c66a225 HL	142	if (cntrl->arg >= cs->channels) {
5002779d TS	143	dev_err(cs->dev,
	144	"ISDN_CMD_DIAL: invalid channel (%d)\n",
	145	(int) cntrl->arg);
3c66a225 HL	146	return -EINVAL;
	147	}
	148
	149	bcs = cs->bcs + cntrl->arg;
	150
	151	if (!gigaset_get_channel(bcs)) {
5002779d	152	dev_err(cs->dev, "ISDN_CMD_DIAL: channel not free\n");
3c66a225 HL	153	return -EBUSY;
	154	}
	155
	156	sp = kmalloc(sizeof *sp, GFP_ATOMIC);
	157	if (!sp) {
	158	gigaset_free_channel(bcs);
5002779d	159	dev_err(cs->dev, "ISDN_CMD_DIAL: out of memory\n");
3c66a225 HL	160	return -ENOMEM;
	161	}
	162	*sp = cntrl->parm.setup;
	163
4d1ff582 TS	164	if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp,
4d1ff582 TS	165	bcs->at_state.seq_index, NULL)) {
3c66a225 HL	166	//FIXME what should we do?
	167	kfree(sp);
	168	gigaset_free_channel(bcs);
	169	return -ENOMEM;
	170	}
	171
784d5858	172	gig_dbg(DEBUG_CMD, "scheduling DIAL");
3c66a225 HL	173	gigaset_schedule_event(cs);
	174	break;
	175	case ISDN_CMD_ACCEPTD: //FIXME
784d5858	176	gig_dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTD");
3c66a225 HL	177
3c66a225 HL	178	if (cntrl->arg >= cs->channels) {
5002779d TS	179	dev_err(cs->dev,
	180	"ISDN_CMD_ACCEPTD: invalid channel (%d)\n",
	181	(int) cntrl->arg);
3c66a225 HL	182	return -EINVAL;
	183	}
	184
	185	if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
784d5858	186	EV_ACCEPT, NULL, 0, NULL)) {
3c66a225 HL	187	//FIXME what should we do?
	188	return -ENOMEM;
	189	}
	190
784d5858	191	gig_dbg(DEBUG_CMD, "scheduling ACCEPT");
3c66a225 HL	192	gigaset_schedule_event(cs);
	193
	194	break;
	195	case ISDN_CMD_ACCEPTB:
784d5858	196	gig_dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTB");
3c66a225 HL	197	break;
3c66a225 HL	198	case ISDN_CMD_HANGUP:
784d5858 TS	199	gig_dbg(DEBUG_ANY, "ISDN_CMD_HANGUP (ch: %d)",
784d5858 TS	200	(int) cntrl->arg);
3c66a225 HL	201
3c66a225 HL	202	if (cntrl->arg >= cs->channels) {
5002779d TS	203	dev_err(cs->dev,
	204	"ISDN_CMD_HANGUP: invalid channel (%d)\n",
	205	(int) cntrl->arg);
3c66a225 HL	206	return -EINVAL;
	207	}
	208
	209	if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
784d5858	210	EV_HUP, NULL, 0, NULL)) {
3c66a225 HL	211	//FIXME what should we do?
	212	return -ENOMEM;
	213	}
	214
784d5858	215	gig_dbg(DEBUG_CMD, "scheduling HUP");
3c66a225 HL	216	gigaset_schedule_event(cs);
	217
	218	break;
917f5085	219	case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */ //FIXME
784d5858	220	gig_dbg(DEBUG_ANY, "ISDN_CMD_CLREAZ");
3c66a225	221	break;
917f5085	222	case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */ //FIXME
784d5858 TS	223	gig_dbg(DEBUG_ANY,
	224	"ISDN_CMD_SETEAZ (id: %d, ch: %ld, number: %s)",
	225	cntrl->driver, cntrl->arg, cntrl->parm.num);
3c66a225	226	break;
917f5085	227	case ISDN_CMD_SETL2: /* Set L2 to given protocol */
784d5858 TS	228	gig_dbg(DEBUG_ANY, "ISDN_CMD_SETL2 (ch: %ld, proto: %lx)",
784d5858 TS	229	cntrl->arg & 0xff, (cntrl->arg >> 8));
3c66a225 HL	230
3c66a225 HL	231	if ((cntrl->arg & 0xff) >= cs->channels) {
5002779d TS	232	dev_err(cs->dev,
	233	"ISDN_CMD_SETL2: invalid channel (%d)\n",
	234	(int) cntrl->arg & 0xff);
3c66a225 HL	235	return -EINVAL;
	236	}
	237
	238	if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg & 0xff].at_state,
784d5858 TS	239	EV_PROTO_L2, NULL, cntrl->arg >> 8,
784d5858 TS	240	NULL)) {
3c66a225 HL	241	//FIXME what should we do?
	242	return -ENOMEM;
	243	}
	244
784d5858	245	gig_dbg(DEBUG_CMD, "scheduling PROTO_L2");
3c66a225 HL	246	gigaset_schedule_event(cs);
3c66a225 HL	247	break;
917f5085	248	case ISDN_CMD_SETL3: /* Set L3 to given protocol */
784d5858 TS	249	gig_dbg(DEBUG_ANY, "ISDN_CMD_SETL3 (ch: %ld, proto: %lx)",
784d5858 TS	250	cntrl->arg & 0xff, (cntrl->arg >> 8));
3c66a225 HL	251
3c66a225 HL	252	if ((cntrl->arg & 0xff) >= cs->channels) {
5002779d TS	253	dev_err(cs->dev,
	254	"ISDN_CMD_SETL3: invalid channel (%d)\n",
	255	(int) cntrl->arg & 0xff);
3c66a225 HL	256	return -EINVAL;
	257	}
	258
	259	if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) {
5002779d TS	260	dev_err(cs->dev,
	261	"ISDN_CMD_SETL3: invalid protocol %lu\n",
	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) {
5002779d TS	273	dev_err(cs->dev,
	274	"ISDN_CMD_ALERT: invalid channel (%d)\n",
	275	(int) cntrl->arg);
3c66a225 HL	276	return -EINVAL;
	277	}
	278	//bcs = cs->bcs + cntrl->arg;
	279	//bcs->proto2 = -1;
	280	// FIXME
	281	break;
	282	case ISDN_CMD_REDIR:
784d5858	283	gig_dbg(DEBUG_ANY, "ISDN_CMD_REDIR"); //FIXME
3c66a225 HL	284	break;
3c66a225 HL	285	case ISDN_CMD_PROT_IO:
784d5858	286	gig_dbg(DEBUG_ANY, "ISDN_CMD_PROT_IO");
3c66a225 HL	287	break;
3c66a225 HL	288	case ISDN_CMD_FAXCMD:
784d5858	289	gig_dbg(DEBUG_ANY, "ISDN_CMD_FAXCMD");
3c66a225 HL	290	break;
3c66a225 HL	291	case ISDN_CMD_GETL2:
784d5858	292	gig_dbg(DEBUG_ANY, "ISDN_CMD_GETL2");
3c66a225 HL	293	break;
3c66a225 HL	294	case ISDN_CMD_GETL3:
784d5858	295	gig_dbg(DEBUG_ANY, "ISDN_CMD_GETL3");
3c66a225 HL	296	break;
3c66a225 HL	297	case ISDN_CMD_GETEAZ:
784d5858	298	gig_dbg(DEBUG_ANY, "ISDN_CMD_GETEAZ");
3c66a225 HL	299	break;
3c66a225 HL	300	case ISDN_CMD_SETSIL:
784d5858	301	gig_dbg(DEBUG_ANY, "ISDN_CMD_SETSIL");
3c66a225 HL	302	break;
3c66a225 HL	303	case ISDN_CMD_GETSIL:
784d5858	304	gig_dbg(DEBUG_ANY, "ISDN_CMD_GETSIL");
3c66a225 HL	305	break;
3c66a225 HL	306	default:
5002779d TS	307	dev_err(cs->dev, "unknown command %d from LL\n",
5002779d TS	308	cntrl->command);
3c66a225 HL	309	return -EINVAL;
	310	}
	311
	312	return retval;
	313	}
	314
	315	void gigaset_i4l_cmd(struct cardstate *cs, int cmd)
	316	{
	317	isdn_ctrl command;
	318
	319	command.driver = cs->myid;
	320	command.command = cmd;
	321	command.arg = 0;
	322	cs->iif.statcallb(&command);
	323	}
	324
	325	void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd)
	326	{
	327	isdn_ctrl command;
	328
	329	command.driver = bcs->cs->myid;
	330	command.command = cmd;
	331	command.arg = bcs->channel;
	332	bcs->cs->iif.statcallb(&command);
	333	}
	334
	335	int gigaset_isdn_setup_dial(struct at_state_t at_state, void data)
	336	{
	337	struct bc_state *bcs = at_state->bcs;
	338	unsigned proto;
	339	const char *bc;
	340	size_t length[AT_NUM];
	341	size_t l;
	342	int i;
	343	struct setup_parm *sp = data;
	344
	345	switch (bcs->proto2) {
	346	case ISDN_PROTO_L2_HDLC:
	347	proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
	348	break;
	349	case ISDN_PROTO_L2_TRANS:
	350	proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
	351	break;
	352	default:
784d5858 TS	353	dev_err(bcs->cs->dev, "%s: invalid L2 protocol: %u\n",
784d5858 TS	354	__func__, bcs->proto2);
3c66a225 HL	355	return -EINVAL;
	356	}
	357
	358	switch (sp->si1) {
	359	case 1: /* audio */
	360	bc = "9090A3"; /* 3.1 kHz audio, A-law */
	361	break;
	362	case 7: /* data */
	363	default: /* hope the app knows what it is doing */
	364	bc = "8890"; /* unrestricted digital information */
	365	}
	366	//FIXME add missing si1 values from 1TR6, inspect si2, set HLC/LLC
	367
	368	length[AT_DIAL ] = 1 + strlen(sp->phone) + 1 + 1;
	369	l = strlen(sp->eazmsn);
	370	length[AT_MSN ] = l ? 6 + l + 1 + 1 : 0;
	371	length[AT_BC ] = 5 + strlen(bc) + 1 + 1;
	372	length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
	373	length[AT_ISO ] = 6 + 1 + 1 + 1; /* channel: 1 character */
	374	length[AT_TYPE ] = 6 + 1 + 1 + 1; /* call type: 1 character */
	375	length[AT_HLC ] = 0;
	376
	377	for (i = 0; i < AT_NUM; ++i) {
	378	kfree(bcs->commands[i]);
	379	bcs->commands[i] = NULL;
	380	if (length[i] &&
	381	!(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
784d5858	382	dev_err(bcs->cs->dev, "out of memory\n");
3c66a225 HL	383	return -ENOMEM;
	384	}
	385	}
	386
	387	/* type = 1: extern, 0: intern, 2: recall, 3: door, 4: centrex */
	388	if (sp->phone[0] == '' && sp->phone[1] == '') {
	389	/* internal call: translate ** prefix to CTP value */
	390	snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
	391	"D%s\r", sp->phone+2);
	392	strncpy(bcs->commands[AT_TYPE], "^SCTP=0\r", length[AT_TYPE]);
	393	} else {
	394	snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
	395	"D%s\r", sp->phone);
	396	strncpy(bcs->commands[AT_TYPE], "^SCTP=1\r", length[AT_TYPE]);
	397	}
	398
	399	if (bcs->commands[AT_MSN])
917f5085 TS	400	snprintf(bcs->commands[AT_MSN], length[AT_MSN],
	401	"^SMSN=%s\r", sp->eazmsn);
	402	snprintf(bcs->commands[AT_BC ], length[AT_BC ],
	403	"^SBC=%s\r", bc);
	404	snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
	405	"^SBPR=%u\r", proto);
	406	snprintf(bcs->commands[AT_ISO ], length[AT_ISO ],
	407	"^SISO=%u\r", (unsigned)bcs->channel + 1);
3c66a225 HL	408
	409	return 0;
	410	}
	411
	412	int gigaset_isdn_setup_accept(struct at_state_t *at_state)
	413	{
	414	unsigned proto;
	415	size_t length[AT_NUM];
	416	int i;
	417	struct bc_state *bcs = at_state->bcs;
	418
	419	switch (bcs->proto2) {
	420	case ISDN_PROTO_L2_HDLC:
	421	proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
	422	break;
	423	case ISDN_PROTO_L2_TRANS:
	424	proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
	425	break;
	426	default:
784d5858 TS	427	dev_err(at_state->cs->dev, "%s: invalid protocol: %u\n",
784d5858 TS	428	__func__, bcs->proto2);
3c66a225 HL	429	return -EINVAL;
	430	}
	431
	432	length[AT_DIAL ] = 0;
	433	length[AT_MSN ] = 0;
	434	length[AT_BC ] = 0;
	435	length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
	436	length[AT_ISO ] = 6 + 1 + 1 + 1; /* channel: 1 character */
	437	length[AT_TYPE ] = 0;
	438	length[AT_HLC ] = 0;
	439
	440	for (i = 0; i < AT_NUM; ++i) {
	441	kfree(bcs->commands[i]);
	442	bcs->commands[i] = NULL;
	443	if (length[i] &&
	444	!(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
784d5858	445	dev_err(at_state->cs->dev, "out of memory\n");
3c66a225 HL	446	return -ENOMEM;
	447	}
	448	}
	449
917f5085 TS	450	snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
	451	"^SBPR=%u\r", proto);
	452	snprintf(bcs->commands[AT_ISO ], length[AT_ISO ],
	453	"^SISO=%u\r", (unsigned) bcs->channel + 1);
3c66a225 HL	454
	455	return 0;
	456	}
	457
	458	int gigaset_isdn_icall(struct at_state_t *at_state)
	459	{
	460	struct cardstate *cs = at_state->cs;
	461	struct bc_state *bcs = at_state->bcs;
	462	isdn_ctrl response;
	463	int retval;
	464
	465	/* fill ICALL structure */
	466	response.parm.setup.si1 = 0; /* default: unknown */
	467	response.parm.setup.si2 = 0;
	468	response.parm.setup.screen = 0; //FIXME how to set these?
	469	response.parm.setup.plan = 0;
	470	if (!at_state->str_var[STR_ZBC]) {
	471	/* no BC (internal call): assume speech, A-law */
	472	response.parm.setup.si1 = 1;
	473	} else if (!strcmp(at_state->str_var[STR_ZBC], "8890")) {
	474	/* unrestricted digital information */
	475	response.parm.setup.si1 = 7;
	476	} else if (!strcmp(at_state->str_var[STR_ZBC], "8090A3")) {
	477	/* speech, A-law */
	478	response.parm.setup.si1 = 1;
	479	} else if (!strcmp(at_state->str_var[STR_ZBC], "9090A3")) {
	480	/* 3,1 kHz audio, A-law */
	481	response.parm.setup.si1 = 1;
	482	response.parm.setup.si2 = 2;
	483	} else {
784d5858	484	dev_warn(cs->dev, "RING ignored - unsupported BC %s\n",
3c66a225 HL	485	at_state->str_var[STR_ZBC]);
	486	return ICALL_IGNORE;
	487	}
	488	if (at_state->str_var[STR_NMBR]) {
	489	strncpy(response.parm.setup.phone, at_state->str_var[STR_NMBR],
	490	sizeof response.parm.setup.phone - 1);
	491	response.parm.setup.phone[sizeof response.parm.setup.phone - 1] = 0;
	492	} else
	493	response.parm.setup.phone[0] = 0;
	494	if (at_state->str_var[STR_ZCPN]) {
	495	strncpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN],
	496	sizeof response.parm.setup.eazmsn - 1);
	497	response.parm.setup.eazmsn[sizeof response.parm.setup.eazmsn - 1] = 0;
	498	} else
	499	response.parm.setup.eazmsn[0] = 0;
	500
	501	if (!bcs) {
784d5858	502	dev_notice(cs->dev, "no channel for incoming call\n");
3c66a225 HL	503	response.command = ISDN_STAT_ICALLW;
	504	response.arg = 0; //FIXME
	505	} else {
784d5858	506	gig_dbg(DEBUG_CMD, "Sending ICALL");
3c66a225 HL	507	response.command = ISDN_STAT_ICALL;
	508	response.arg = bcs->channel; //FIXME
	509	}
	510	response.driver = cs->myid;
	511	retval = cs->iif.statcallb(&response);
784d5858	512	gig_dbg(DEBUG_CMD, "Response: %d", retval);
3c66a225 HL	513	switch (retval) {
	514	case 0: /* no takers */
	515	return ICALL_IGNORE;
	516	case 1: /* alerting */
	517	bcs->chstate \|= CHS_NOTIFY_LL;
	518	return ICALL_ACCEPT;
	519	case 2: /* reject */
	520	return ICALL_REJECT;
	521	case 3: /* incomplete */
784d5858 TS	522	dev_warn(cs->dev,
784d5858 TS	523	"LL requested unsupported feature: Incomplete Number\n");
3c66a225 HL	524	return ICALL_IGNORE;
	525	case 4: /* proceeding */
	526	/* Gigaset will send ALERTING anyway.
	527	* There doesn't seem to be a way to avoid this.
	528	*/
	529	return ICALL_ACCEPT;
	530	case 5: /* deflect */
784d5858 TS	531	dev_warn(cs->dev,
784d5858 TS	532	"LL requested unsupported feature: Call Deflection\n");
3c66a225 HL	533	return ICALL_IGNORE;
3c66a225 HL	534	default:
784d5858	535	dev_err(cs->dev, "LL error %d on ICALL\n", retval);
3c66a225 HL	536	return ICALL_IGNORE;
	537	}
	538	}
	539
	540	/* Set Callback function pointer */
	541	int gigaset_register_to_LL(struct cardstate cs, const char isdnid)
	542	{
	543	isdn_if *iif = &cs->iif;
	544
784d5858	545	gig_dbg(DEBUG_ANY, "Register driver capabilities to LL");
3c66a225	546
3c66a225	547	if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index)
7226d7c9 TS	548	>= sizeof iif->id) {
	549	pr_err("ID too long: %s\n", isdnid);
	550	return 0;
	551	}
3c66a225 HL	552
3c66a225 HL	553	iif->owner = THIS_MODULE;
917f5085	554	iif->channels = cs->channels;
3c66a225	555	iif->maxbufsize = MAX_BUF_SIZE;
917f5085	556	iif->features = ISDN_FEATURE_L2_TRANS \|
3c66a225 HL	557	ISDN_FEATURE_L2_HDLC \|
	558	#ifdef GIG_X75
	559	ISDN_FEATURE_L2_X75I \|
	560	#endif
	561	ISDN_FEATURE_L3_TRANS \|
	562	ISDN_FEATURE_P_EURO;
784d5858	563	iif->hl_hdrlen = HW_HDR_LEN; /* Area for storing ack */
3c66a225 HL	564	iif->command = command_from_LL;
3c66a225 HL	565	iif->writebuf_skb = writebuf_from_LL;
784d5858 TS	566	iif->writecmd = NULL; /* Don't support isdnctrl */
	567	iif->readstat = NULL; /* Don't support isdnctrl */
	568	iif->rcvcallb_skb = NULL; /* Will be set by LL */
	569	iif->statcallb = NULL; /* Will be set by LL */
3c66a225	570
7226d7c9 TS	571	if (!register_isdn(iif)) {
7226d7c9 TS	572	pr_err("register_isdn failed\n");
3c66a225	573	return 0;
7226d7c9	574	}
3c66a225	575
784d5858	576	cs->myid = iif->channels; /* Set my device id */
3c66a225 HL	577	return 1;
3c66a225 HL	578	}