/*
|
* 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"
|
#include <linux/isdnif.h>
|
#include <linux/export.h>
|
|
#define SBUFSIZE 4096 /* sk_buff payload size */
|
#define TRANSBUFSIZE 768 /* bytes per skb for transparent receive */
|
#define HW_HDR_LEN 2 /* Header size used to store ack info */
|
#define MAX_BUF_SIZE (SBUFSIZE - HW_HDR_LEN) /* max data packet from LL */
|
|
/* == 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 = gigaset_get_cs_by_id(driverID);
|
struct bc_state *bcs;
|
unsigned char *ack_header;
|
unsigned len;
|
|
if (!cs) {
|
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];
|
|
/* can only handle linear sk_buffs */
|
if (skb_linearize(skb) < 0) {
|
dev_err(cs->dev, "%s: skb_linearize failed\n", __func__);
|
return -ENOMEM;
|
}
|
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;
|
}
|
|
/* set up acknowledgement header */
|
if (skb_headroom(skb) < HW_HDR_LEN) {
|
/* should never happen */
|
dev_err(cs->dev, "%s: insufficient skb headroom\n", __func__);
|
return -ENOMEM;
|
}
|
skb_set_mac_header(skb, -HW_HDR_LEN);
|
skb->mac_len = HW_HDR_LEN;
|
ack_header = skb_mac_header(skb);
|
if (ack) {
|
ack_header[0] = len & 0xff;
|
ack_header[1] = len >> 8;
|
} else {
|
ack_header[0] = ack_header[1] = 0;
|
}
|
gig_dbg(DEBUG_MCMD, "skb: len=%u, ack=%d: %02x %02x",
|
len, ack, ack_header[0], ack_header[1]);
|
|
/* pass to device-specific module */
|
return cs->ops->send_skb(bcs, skb);
|
}
|
|
/**
|
* gigaset_skb_sent() - acknowledge sending an skb
|
* @bcs: B channel descriptor structure.
|
* @skb: sent data.
|
*
|
* Called by hardware module {bas,ser,usb}_gigaset when the data in a
|
* skb has been successfully sent, for signalling completion to the LL.
|
*/
|
void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb)
|
{
|
isdn_if *iif = bcs->cs->iif;
|
unsigned char *ack_header = skb_mac_header(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 = ack_header[0] + ((unsigned) ack_header[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;
|
iif->statcallb(&response);
|
}
|
}
|
EXPORT_SYMBOL_GPL(gigaset_skb_sent);
|
|
/**
|
* gigaset_skb_rcvd() - pass received skb to LL
|
* @bcs: B channel descriptor structure.
|
* @skb: received data.
|
*
|
* Called by hardware module {bas,ser,usb}_gigaset when user data has
|
* been successfully received, for passing to the LL.
|
* Warning: skb must not be accessed anymore!
|
*/
|
void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb)
|
{
|
isdn_if *iif = bcs->cs->iif;
|
|
iif->rcvcallb_skb(bcs->cs->myid, bcs->channel, skb);
|
bcs->trans_down++;
|
}
|
EXPORT_SYMBOL_GPL(gigaset_skb_rcvd);
|
|
/**
|
* gigaset_isdn_rcv_err() - signal receive error
|
* @bcs: B channel descriptor structure.
|
*
|
* Called by hardware module {bas,ser,usb}_gigaset when a receive error
|
* has occurred, for signalling to the LL.
|
*/
|
void gigaset_isdn_rcv_err(struct bc_state *bcs)
|
{
|
isdn_if *iif = bcs->cs->iif;
|
isdn_ctrl response;
|
|
/* if currently ignoring packets, just count down */
|
if (bcs->ignore) {
|
bcs->ignore--;
|
return;
|
}
|
|
/* update statistics */
|
bcs->corrupted++;
|
|
/* error -> LL */
|
gig_dbg(DEBUG_CMD, "sending L1ERR");
|
response.driver = bcs->cs->myid;
|
response.command = ISDN_STAT_L1ERR;
|
response.arg = bcs->channel;
|
response.parm.errcode = ISDN_STAT_L1ERR_RECV;
|
iif->statcallb(&response);
|
}
|
EXPORT_SYMBOL_GPL(gigaset_isdn_rcv_err);
|
|
/* 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;
|
struct bc_state *bcs;
|
int retval = 0;
|
char **commands;
|
int ch;
|
int i;
|
size_t l;
|
|
gig_dbg(DEBUG_CMD, "driver: %d, command: %d, arg: 0x%lx",
|
cntrl->driver, cntrl->command, cntrl->arg);
|
|
cs = gigaset_get_cs_by_id(cntrl->driver);
|
if (cs == NULL) {
|
pr_err("%s: invalid driver ID (%d)\n", __func__, cntrl->driver);
|
return -ENODEV;
|
}
|
ch = cntrl->arg & 0xff;
|
|
switch (cntrl->command) {
|
case ISDN_CMD_IOCTL:
|
dev_warn(cs->dev, "ISDN_CMD_IOCTL not supported\n");
|
return -EINVAL;
|
|
case ISDN_CMD_DIAL:
|
gig_dbg(DEBUG_CMD,
|
"ISDN_CMD_DIAL (phone: %s, msn: %s, si1: %d, si2: %d)",
|
cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn,
|
cntrl->parm.setup.si1, cntrl->parm.setup.si2);
|
|
if (ch >= cs->channels) {
|
dev_err(cs->dev,
|
"ISDN_CMD_DIAL: invalid channel (%d)\n", ch);
|
return -EINVAL;
|
}
|
bcs = cs->bcs + ch;
|
if (gigaset_get_channel(bcs) < 0) {
|
dev_err(cs->dev, "ISDN_CMD_DIAL: channel not free\n");
|
return -EBUSY;
|
}
|
switch (bcs->proto2) {
|
case L2_HDLC:
|
bcs->rx_bufsize = SBUFSIZE;
|
break;
|
default: /* assume transparent */
|
bcs->rx_bufsize = TRANSBUFSIZE;
|
}
|
dev_kfree_skb(bcs->rx_skb);
|
gigaset_new_rx_skb(bcs);
|
|
commands = kcalloc(AT_NUM, sizeof(*commands), GFP_ATOMIC);
|
if (!commands) {
|
gigaset_free_channel(bcs);
|
dev_err(cs->dev, "ISDN_CMD_DIAL: out of memory\n");
|
return -ENOMEM;
|
}
|
|
l = 3 + strlen(cntrl->parm.setup.phone);
|
commands[AT_DIAL] = kmalloc(l, GFP_ATOMIC);
|
if (!commands[AT_DIAL])
|
goto oom;
|
if (cntrl->parm.setup.phone[0] == '*' &&
|
cntrl->parm.setup.phone[1] == '*') {
|
/* internal call: translate ** prefix to CTP value */
|
commands[AT_TYPE] = kstrdup("^SCTP=0\r", GFP_ATOMIC);
|
if (!commands[AT_TYPE])
|
goto oom;
|
snprintf(commands[AT_DIAL], l,
|
"D%s\r", cntrl->parm.setup.phone + 2);
|
} else {
|
commands[AT_TYPE] = kstrdup("^SCTP=1\r", GFP_ATOMIC);
|
if (!commands[AT_TYPE])
|
goto oom;
|
snprintf(commands[AT_DIAL], l,
|
"D%s\r", cntrl->parm.setup.phone);
|
}
|
|
l = strlen(cntrl->parm.setup.eazmsn);
|
if (l) {
|
l += 8;
|
commands[AT_MSN] = kmalloc(l, GFP_ATOMIC);
|
if (!commands[AT_MSN])
|
goto oom;
|
snprintf(commands[AT_MSN], l, "^SMSN=%s\r",
|
cntrl->parm.setup.eazmsn);
|
}
|
|
switch (cntrl->parm.setup.si1) {
|
case 1: /* audio */
|
/* BC = 9090A3: 3.1 kHz audio, A-law */
|
commands[AT_BC] = kstrdup("^SBC=9090A3\r", GFP_ATOMIC);
|
if (!commands[AT_BC])
|
goto oom;
|
break;
|
case 7: /* data */
|
default: /* hope the app knows what it is doing */
|
/* BC = 8890: unrestricted digital information */
|
commands[AT_BC] = kstrdup("^SBC=8890\r", GFP_ATOMIC);
|
if (!commands[AT_BC])
|
goto oom;
|
}
|
/* ToDo: other si1 values, inspect si2, set HLC/LLC */
|
|
commands[AT_PROTO] = kmalloc(9, GFP_ATOMIC);
|
if (!commands[AT_PROTO])
|
goto oom;
|
snprintf(commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2);
|
|
commands[AT_ISO] = kmalloc(9, GFP_ATOMIC);
|
if (!commands[AT_ISO])
|
goto oom;
|
snprintf(commands[AT_ISO], 9, "^SISO=%u\r",
|
(unsigned) bcs->channel + 1);
|
|
if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, commands,
|
bcs->at_state.seq_index, NULL)) {
|
for (i = 0; i < AT_NUM; ++i)
|
kfree(commands[i]);
|
kfree(commands);
|
gigaset_free_channel(bcs);
|
return -ENOMEM;
|
}
|
gigaset_schedule_event(cs);
|
break;
|
case ISDN_CMD_ACCEPTD:
|
gig_dbg(DEBUG_CMD, "ISDN_CMD_ACCEPTD");
|
if (ch >= cs->channels) {
|
dev_err(cs->dev,
|
"ISDN_CMD_ACCEPTD: invalid channel (%d)\n", ch);
|
return -EINVAL;
|
}
|
bcs = cs->bcs + ch;
|
switch (bcs->proto2) {
|
case L2_HDLC:
|
bcs->rx_bufsize = SBUFSIZE;
|
break;
|
default: /* assume transparent */
|
bcs->rx_bufsize = TRANSBUFSIZE;
|
}
|
dev_kfree_skb(bcs->rx_skb);
|
gigaset_new_rx_skb(bcs);
|
if (!gigaset_add_event(cs, &bcs->at_state,
|
EV_ACCEPT, NULL, 0, NULL))
|
return -ENOMEM;
|
gigaset_schedule_event(cs);
|
|
break;
|
case ISDN_CMD_HANGUP:
|
gig_dbg(DEBUG_CMD, "ISDN_CMD_HANGUP");
|
if (ch >= cs->channels) {
|
dev_err(cs->dev,
|
"ISDN_CMD_HANGUP: invalid channel (%d)\n", ch);
|
return -EINVAL;
|
}
|
bcs = cs->bcs + ch;
|
if (!gigaset_add_event(cs, &bcs->at_state,
|
EV_HUP, NULL, 0, NULL))
|
return -ENOMEM;
|
gigaset_schedule_event(cs);
|
|
break;
|
case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */
|
dev_info(cs->dev, "ignoring ISDN_CMD_CLREAZ\n");
|
break;
|
case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */
|
dev_info(cs->dev, "ignoring ISDN_CMD_SETEAZ (%s)\n",
|
cntrl->parm.num);
|
break;
|
case ISDN_CMD_SETL2: /* Set L2 to given protocol */
|
if (ch >= cs->channels) {
|
dev_err(cs->dev,
|
"ISDN_CMD_SETL2: invalid channel (%d)\n", ch);
|
return -EINVAL;
|
}
|
bcs = cs->bcs + ch;
|
if (bcs->chstate & CHS_D_UP) {
|
dev_err(cs->dev,
|
"ISDN_CMD_SETL2: channel active (%d)\n", ch);
|
return -EINVAL;
|
}
|
switch (cntrl->arg >> 8) {
|
case ISDN_PROTO_L2_HDLC:
|
gig_dbg(DEBUG_CMD, "ISDN_CMD_SETL2: setting L2_HDLC");
|
bcs->proto2 = L2_HDLC;
|
break;
|
case ISDN_PROTO_L2_TRANS:
|
gig_dbg(DEBUG_CMD, "ISDN_CMD_SETL2: setting L2_VOICE");
|
bcs->proto2 = L2_VOICE;
|
break;
|
default:
|
dev_err(cs->dev,
|
"ISDN_CMD_SETL2: unsupported protocol (%lu)\n",
|
cntrl->arg >> 8);
|
return -EINVAL;
|
}
|
break;
|
case ISDN_CMD_SETL3: /* Set L3 to given protocol */
|
gig_dbg(DEBUG_CMD, "ISDN_CMD_SETL3");
|
if (ch >= cs->channels) {
|
dev_err(cs->dev,
|
"ISDN_CMD_SETL3: invalid channel (%d)\n", ch);
|
return -EINVAL;
|
}
|
|
if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) {
|
dev_err(cs->dev,
|
"ISDN_CMD_SETL3: unsupported protocol (%lu)\n",
|
cntrl->arg >> 8);
|
return -EINVAL;
|
}
|
|
break;
|
|
default:
|
gig_dbg(DEBUG_CMD, "unknown command %d from LL",
|
cntrl->command);
|
return -EINVAL;
|
}
|
|
return retval;
|
|
oom:
|
dev_err(bcs->cs->dev, "out of memory\n");
|
for (i = 0; i < AT_NUM; ++i)
|
kfree(commands[i]);
|
kfree(commands);
|
gigaset_free_channel(bcs);
|
return -ENOMEM;
|
}
|
|
static void gigaset_i4l_cmd(struct cardstate *cs, int cmd)
|
{
|
isdn_if *iif = cs->iif;
|
isdn_ctrl command;
|
|
command.driver = cs->myid;
|
command.command = cmd;
|
command.arg = 0;
|
iif->statcallb(&command);
|
}
|
|
static void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd)
|
{
|
isdn_if *iif = bcs->cs->iif;
|
isdn_ctrl command;
|
|
command.driver = bcs->cs->myid;
|
command.command = cmd;
|
command.arg = bcs->channel;
|
iif->statcallb(&command);
|
}
|
|
/**
|
* gigaset_isdn_icall() - signal incoming call
|
* @at_state: connection state structure.
|
*
|
* Called by main module to notify the LL that an incoming call has been
|
* received. @at_state contains the parameters of the call.
|
*
|
* Return value: call disposition (ICALL_*)
|
*/
|
int gigaset_isdn_icall(struct at_state_t *at_state)
|
{
|
struct cardstate *cs = at_state->cs;
|
struct bc_state *bcs = at_state->bcs;
|
isdn_if *iif = cs->iif;
|
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;
|
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]) {
|
strlcpy(response.parm.setup.phone, at_state->str_var[STR_NMBR],
|
sizeof response.parm.setup.phone);
|
} else
|
response.parm.setup.phone[0] = 0;
|
if (at_state->str_var[STR_ZCPN]) {
|
strlcpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN],
|
sizeof response.parm.setup.eazmsn);
|
} 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;
|
} else {
|
gig_dbg(DEBUG_CMD, "Sending ICALL");
|
response.command = ISDN_STAT_ICALL;
|
response.arg = bcs->channel;
|
}
|
response.driver = cs->myid;
|
retval = 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;
|
}
|
}
|
|
/**
|
* gigaset_isdn_connD() - signal D channel connect
|
* @bcs: B channel descriptor structure.
|
*
|
* Called by main module to notify the LL that the D channel connection has
|
* been established.
|
*/
|
void gigaset_isdn_connD(struct bc_state *bcs)
|
{
|
gig_dbg(DEBUG_CMD, "sending DCONN");
|
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
|
}
|
|
/**
|
* gigaset_isdn_hupD() - signal D channel hangup
|
* @bcs: B channel descriptor structure.
|
*
|
* Called by main module to notify the LL that the D channel connection has
|
* been shut down.
|
*/
|
void gigaset_isdn_hupD(struct bc_state *bcs)
|
{
|
gig_dbg(DEBUG_CMD, "sending DHUP");
|
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
|
}
|
|
/**
|
* gigaset_isdn_connB() - signal B channel connect
|
* @bcs: B channel descriptor structure.
|
*
|
* Called by main module to notify the LL that the B channel connection has
|
* been established.
|
*/
|
void gigaset_isdn_connB(struct bc_state *bcs)
|
{
|
gig_dbg(DEBUG_CMD, "sending BCONN");
|
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
|
}
|
|
/**
|
* gigaset_isdn_hupB() - signal B channel hangup
|
* @bcs: B channel descriptor structure.
|
*
|
* Called by main module to notify the LL that the B channel connection has
|
* been shut down.
|
*/
|
void gigaset_isdn_hupB(struct bc_state *bcs)
|
{
|
gig_dbg(DEBUG_CMD, "sending BHUP");
|
gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
|
}
|
|
/**
|
* gigaset_isdn_start() - signal device availability
|
* @cs: device descriptor structure.
|
*
|
* Called by main module to notify the LL that the device is available for
|
* use.
|
*/
|
void gigaset_isdn_start(struct cardstate *cs)
|
{
|
gig_dbg(DEBUG_CMD, "sending RUN");
|
gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
|
}
|
|
/**
|
* gigaset_isdn_stop() - signal device unavailability
|
* @cs: device descriptor structure.
|
*
|
* Called by main module to notify the LL that the device is no longer
|
* available for use.
|
*/
|
void gigaset_isdn_stop(struct cardstate *cs)
|
{
|
gig_dbg(DEBUG_CMD, "sending STOP");
|
gigaset_i4l_cmd(cs, ISDN_STAT_STOP);
|
}
|
|
/**
|
* gigaset_isdn_regdev() - register to LL
|
* @cs: device descriptor structure.
|
* @isdnid: device name.
|
*
|
* Return value: 0 on success, error code < 0 on failure
|
*/
|
int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid)
|
{
|
isdn_if *iif;
|
|
iif = kmalloc(sizeof *iif, GFP_KERNEL);
|
if (!iif) {
|
pr_err("out of memory\n");
|
return -ENOMEM;
|
}
|
|
if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index)
|
>= sizeof iif->id) {
|
pr_err("ID too long: %s\n", isdnid);
|
kfree(iif);
|
return -EINVAL;
|
}
|
|
iif->owner = THIS_MODULE;
|
iif->channels = cs->channels;
|
iif->maxbufsize = MAX_BUF_SIZE;
|
iif->features = ISDN_FEATURE_L2_TRANS |
|
ISDN_FEATURE_L2_HDLC |
|
ISDN_FEATURE_L2_X75I |
|
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");
|
kfree(iif);
|
return -EINVAL;
|
}
|
|
cs->iif = iif;
|
cs->myid = iif->channels; /* Set my device id */
|
cs->hw_hdr_len = HW_HDR_LEN;
|
return 0;
|
}
|
|
/**
|
* gigaset_isdn_unregdev() - unregister device from LL
|
* @cs: device descriptor structure.
|
*/
|
void gigaset_isdn_unregdev(struct cardstate *cs)
|
{
|
gig_dbg(DEBUG_CMD, "sending UNLOAD");
|
gigaset_i4l_cmd(cs, ISDN_STAT_UNLOAD);
|
kfree(cs->iif);
|
cs->iif = NULL;
|
}
|
|
/**
|
* gigaset_isdn_regdrv() - register driver to LL
|
*/
|
void gigaset_isdn_regdrv(void)
|
{
|
pr_info("ISDN4Linux interface\n");
|
/* nothing to do */
|
}
|
|
/**
|
* gigaset_isdn_unregdrv() - unregister driver from LL
|
*/
|
void gigaset_isdn_unregdrv(void)
|
{
|
/* nothing to do */
|
}
|
