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linux/drivers/isdn/capi/capidrv.c
Jan Kiszka ef69bb2ec6 CAPI: Rework controller state notifier 
Another step towards proper locking: Rework the callback provided to
capidrv for controller state changes. This is so far attached to an
application, which would require us to hold the corresponding lock
across notification calls.

But there is no direct relation between a controller up/down event and
an application, so let's decouple them and provide a notifier call chain
for those events instead. This notifier chain is first of all used
internally. Here we request the highest priority to unsure that
housekeeping work is done before any other notifications. The chain is
exported via [un]register_capictr_notifier to our only user, capidrv, to
replace the racy and unfixable capi20_set_callback.

Signed-off-by: Jan Kiszka <jan.kiszka@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16 16:01:21 -08:00

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/* $Id: capidrv.c,v 1.1.2.2 2004/01/12 23:17:24 keil Exp $
*
* ISDN4Linux Driver, using capi20 interface (kernelcapi)
*
* Copyright 1997 by Carsten Paeth <calle@calle.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/fcntl.h>
#include <linux/fs.h>
#include <linux/signal.h>
#include <linux/mm.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/skbuff.h>
#include <linux/isdn.h>
#include <linux/isdnif.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/capi.h>
#include <linux/kernelcapi.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <linux/isdn/capiutil.h>
#include <linux/isdn/capicmd.h>
#include "capidrv.h"
static int debugmode = 0;
MODULE_DESCRIPTION("CAPI4Linux: Interface to ISDN4Linux");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");
module_param(debugmode, uint, S_IRUGO|S_IWUSR);
/* -------- type definitions ----------------------------------------- */
struct capidrv_contr {
struct capidrv_contr *next;
struct module *owner;
u32 contrnr;
char name[20];
/*
* for isdn4linux
*/
isdn_if interface;
int myid;
/*
* LISTEN state
*/
int state;
u32 cipmask;
u32 cipmask2;
struct timer_list listentimer;
/*
* ID of capi message sent
*/
u16 msgid;
/*
* B-Channels
*/
int nbchan;
struct capidrv_bchan {
struct capidrv_contr *contr;
u8 msn[ISDN_MSNLEN];
int l2;
int l3;
u8 num[ISDN_MSNLEN];
u8 mynum[ISDN_MSNLEN];
int si1;
int si2;
int incoming;
int disconnecting;
struct capidrv_plci {
struct capidrv_plci *next;
u32 plci;
u32 ncci; /* ncci for CONNECT_ACTIVE_IND */
u16 msgid; /* to identfy CONNECT_CONF */
int chan;
int state;
int leasedline;
struct capidrv_ncci {
struct capidrv_ncci *next;
struct capidrv_plci *plcip;
u32 ncci;
u16 msgid; /* to identfy CONNECT_B3_CONF */
int chan;
int state;
int oldstate;
/* */
u16 datahandle;
struct ncci_datahandle_queue {
struct ncci_datahandle_queue *next;
u16 datahandle;
int len;
} *ackqueue;
} *ncci_list;
} *plcip;
struct capidrv_ncci *nccip;
} *bchans;
struct capidrv_plci *plci_list;
/* for q931 data */
u8 q931_buf[4096];
u8 *q931_read;
u8 *q931_write;
u8 *q931_end;
};
struct capidrv_data {
struct capi20_appl ap;
int ncontr;
struct capidrv_contr *contr_list;
};
typedef struct capidrv_plci capidrv_plci;
typedef struct capidrv_ncci capidrv_ncci;
typedef struct capidrv_contr capidrv_contr;
typedef struct capidrv_data capidrv_data;
typedef struct capidrv_bchan capidrv_bchan;
/* -------- data definitions ----------------------------------------- */
static capidrv_data global;
static DEFINE_SPINLOCK(global_lock);
static void handle_dtrace_data(capidrv_contr *card,
int send, int level2, u8 *data, u16 len);
/* -------- convert functions ---------------------------------------- */
static inline u32 b1prot(int l2, int l3)
{
switch (l2) {
case ISDN_PROTO_L2_X75I:
case ISDN_PROTO_L2_X75UI:
case ISDN_PROTO_L2_X75BUI:
return 0;
case ISDN_PROTO_L2_HDLC:
default:
return 0;
case ISDN_PROTO_L2_TRANS:
return 1;
case ISDN_PROTO_L2_V11096:
case ISDN_PROTO_L2_V11019:
case ISDN_PROTO_L2_V11038:
return 2;
case ISDN_PROTO_L2_FAX:
return 4;
case ISDN_PROTO_L2_MODEM:
return 8;
}
}
static inline u32 b2prot(int l2, int l3)
{
switch (l2) {
case ISDN_PROTO_L2_X75I:
case ISDN_PROTO_L2_X75UI:
case ISDN_PROTO_L2_X75BUI:
default:
return 0;
case ISDN_PROTO_L2_HDLC:
case ISDN_PROTO_L2_TRANS:
case ISDN_PROTO_L2_V11096:
case ISDN_PROTO_L2_V11019:
case ISDN_PROTO_L2_V11038:
case ISDN_PROTO_L2_MODEM:
return 1;
case ISDN_PROTO_L2_FAX:
return 4;
}
}
static inline u32 b3prot(int l2, int l3)
{
switch (l2) {
case ISDN_PROTO_L2_X75I:
case ISDN_PROTO_L2_X75UI:
case ISDN_PROTO_L2_X75BUI:
case ISDN_PROTO_L2_HDLC:
case ISDN_PROTO_L2_TRANS:
case ISDN_PROTO_L2_V11096:
case ISDN_PROTO_L2_V11019:
case ISDN_PROTO_L2_V11038:
case ISDN_PROTO_L2_MODEM:
default:
return 0;
case ISDN_PROTO_L2_FAX:
return 4;
}
}
static _cstruct b1config_async_v110(u16 rate)
{
/* CAPI-Spec "B1 Configuration" */
static unsigned char buf[9];
buf[0] = 8; /* len */
/* maximum bitrate */
buf[1] = rate & 0xff; buf[2] = (rate >> 8) & 0xff;
buf[3] = 8; buf[4] = 0; /* 8 bits per character */
buf[5] = 0; buf[6] = 0; /* parity none */
buf[7] = 0; buf[8] = 0; /* 1 stop bit */
return buf;
}
static _cstruct b1config(int l2, int l3)
{
switch (l2) {
case ISDN_PROTO_L2_X75I:
case ISDN_PROTO_L2_X75UI:
case ISDN_PROTO_L2_X75BUI:
case ISDN_PROTO_L2_HDLC:
case ISDN_PROTO_L2_TRANS:
default:
return NULL;
case ISDN_PROTO_L2_V11096:
return b1config_async_v110(9600);
case ISDN_PROTO_L2_V11019:
return b1config_async_v110(19200);
case ISDN_PROTO_L2_V11038:
return b1config_async_v110(38400);
}
}
static inline u16 si2cip(u8 si1, u8 si2)
{
static const u8 cip[17][5] =
{
/* 0 1 2 3 4 */
{0, 0, 0, 0, 0}, /*0 */
{16, 16, 4, 26, 16}, /*1 */
{17, 17, 17, 4, 4}, /*2 */
{2, 2, 2, 2, 2}, /*3 */
{18, 18, 18, 18, 18}, /*4 */
{2, 2, 2, 2, 2}, /*5 */
{0, 0, 0, 0, 0}, /*6 */
{2, 2, 2, 2, 2}, /*7 */
{2, 2, 2, 2, 2}, /*8 */
{21, 21, 21, 21, 21}, /*9 */
{19, 19, 19, 19, 19}, /*10 */
{0, 0, 0, 0, 0}, /*11 */
{0, 0, 0, 0, 0}, /*12 */
{0, 0, 0, 0, 0}, /*13 */
{0, 0, 0, 0, 0}, /*14 */
{22, 22, 22, 22, 22}, /*15 */
{27, 27, 27, 28, 27} /*16 */
};
if (si1 > 16)
si1 = 0;
if (si2 > 4)
si2 = 0;
return (u16) cip[si1][si2];
}
static inline u8 cip2si1(u16 cipval)
{
static const u8 si[32] =
{7, 1, 7, 7, 1, 1, 7, 7, /*0-7 */
7, 1, 0, 0, 0, 0, 0, 0, /*8-15 */
1, 2, 4, 10, 9, 9, 15, 7, /*16-23 */
7, 7, 1, 16, 16, 0, 0, 0}; /*24-31 */
if (cipval > 31)
cipval = 0; /* .... */
return si[cipval];
}
static inline u8 cip2si2(u16 cipval)
{
static const u8 si[32] =
{0, 0, 0, 0, 2, 3, 0, 0, /*0-7 */
0, 3, 0, 0, 0, 0, 0, 0, /*8-15 */
1, 2, 0, 0, 9, 0, 0, 0, /*16-23 */
0, 0, 3, 2, 3, 0, 0, 0}; /*24-31 */
if (cipval > 31)
cipval = 0; /* .... */
return si[cipval];
}
/* -------- controller management ------------------------------------- */
static inline capidrv_contr *findcontrbydriverid(int driverid)
{
unsigned long flags;
capidrv_contr *p;
spin_lock_irqsave(&global_lock, flags);
for (p = global.contr_list; p; p = p->next)
if (p->myid == driverid)
break;
spin_unlock_irqrestore(&global_lock, flags);
return p;
}
static capidrv_contr *findcontrbynumber(u32 contr)
{
unsigned long flags;
capidrv_contr *p = global.contr_list;
spin_lock_irqsave(&global_lock, flags);
for (p = global.contr_list; p; p = p->next)
if (p->contrnr == contr)
break;
spin_unlock_irqrestore(&global_lock, flags);
return p;
}
/* -------- plci management ------------------------------------------ */
static capidrv_plci *new_plci(capidrv_contr * card, int chan)
{
capidrv_plci *plcip;
plcip = kzalloc(sizeof(capidrv_plci), GFP_ATOMIC);
if (plcip == NULL)
return NULL;
plcip->state = ST_PLCI_NONE;
plcip->plci = 0;
plcip->msgid = 0;
plcip->chan = chan;
plcip->next = card->plci_list;
card->plci_list = plcip;
card->bchans[chan].plcip = plcip;
return plcip;
}
static capidrv_plci *find_plci_by_plci(capidrv_contr * card, u32 plci)
{
capidrv_plci *p;
for (p = card->plci_list; p; p = p->next)
if (p->plci == plci)
return p;
return NULL;
}
static capidrv_plci *find_plci_by_msgid(capidrv_contr * card, u16 msgid)
{
capidrv_plci *p;
for (p = card->plci_list; p; p = p->next)
if (p->msgid == msgid)
return p;
return NULL;
}
static capidrv_plci *find_plci_by_ncci(capidrv_contr * card, u32 ncci)
{
capidrv_plci *p;
for (p = card->plci_list; p; p = p->next)
if (p->plci == (ncci & 0xffff))
return p;
return NULL;
}
static void free_plci(capidrv_contr * card, capidrv_plci * plcip)
{
capidrv_plci **pp;
for (pp = &card->plci_list; *pp; pp = &(*pp)->next) {
if (*pp == plcip) {
*pp = (*pp)->next;
card->bchans[plcip->chan].plcip = NULL;
card->bchans[plcip->chan].disconnecting = 0;
card->bchans[plcip->chan].incoming = 0;
kfree(plcip);
return;
}
}
printk(KERN_ERR "capidrv-%d: free_plci %p (0x%x) not found, Huh?\n",
card->contrnr, plcip, plcip->plci);
}
/* -------- ncci management ------------------------------------------ */
static inline capidrv_ncci *new_ncci(capidrv_contr * card,
capidrv_plci * plcip,
u32 ncci)
{
capidrv_ncci *nccip;
nccip = kzalloc(sizeof(capidrv_ncci), GFP_ATOMIC);
if (nccip == NULL)
return NULL;
nccip->ncci = ncci;
nccip->state = ST_NCCI_NONE;
nccip->plcip = plcip;
nccip->chan = plcip->chan;
nccip->datahandle = 0;
nccip->next = plcip->ncci_list;
plcip->ncci_list = nccip;
card->bchans[plcip->chan].nccip = nccip;
return nccip;
}
static inline capidrv_ncci *find_ncci(capidrv_contr * card, u32 ncci)
{
capidrv_plci *plcip;
capidrv_ncci *p;
if ((plcip = find_plci_by_ncci(card, ncci)) == NULL)
return NULL;
for (p = plcip->ncci_list; p; p = p->next)
if (p->ncci == ncci)
return p;
return NULL;
}
static inline capidrv_ncci *find_ncci_by_msgid(capidrv_contr * card,
u32 ncci, u16 msgid)
{
capidrv_plci *plcip;
capidrv_ncci *p;
if ((plcip = find_plci_by_ncci(card, ncci)) == NULL)
return NULL;
for (p = plcip->ncci_list; p; p = p->next)
if (p->msgid == msgid)
return p;
return NULL;
}
static void free_ncci(capidrv_contr * card, struct capidrv_ncci *nccip)
{
struct capidrv_ncci **pp;
for (pp = &(nccip->plcip->ncci_list); *pp; pp = &(*pp)->next) {
if (*pp == nccip) {
*pp = (*pp)->next;
break;
}
}
card->bchans[nccip->chan].nccip = NULL;
kfree(nccip);
}
static int capidrv_add_ack(struct capidrv_ncci *nccip,
u16 datahandle, int len)
{
struct ncci_datahandle_queue *n, **pp;
n = (struct ncci_datahandle_queue *)
kmalloc(sizeof(struct ncci_datahandle_queue), GFP_ATOMIC);
if (!n) {
printk(KERN_ERR "capidrv: kmalloc ncci_datahandle failed\n");
return -1;
}
n->next = NULL;
n->datahandle = datahandle;
n->len = len;
for (pp = &nccip->ackqueue; *pp; pp = &(*pp)->next) ;
*pp = n;
return 0;
}
static int capidrv_del_ack(struct capidrv_ncci *nccip, u16 datahandle)
{
struct ncci_datahandle_queue **pp, *p;
int len;
for (pp = &nccip->ackqueue; *pp; pp = &(*pp)->next) {
if ((*pp)->datahandle == datahandle) {
p = *pp;
len = p->len;
*pp = (*pp)->next;
kfree(p);
return len;
}
}
return -1;
}
/* -------- convert and send capi message ---------------------------- */
static void send_message(capidrv_contr * card, _cmsg * cmsg)
{
struct sk_buff *skb;
size_t len;
capi_cmsg2message(cmsg, cmsg->buf);
len = CAPIMSG_LEN(cmsg->buf);
skb = alloc_skb(len, GFP_ATOMIC);
if (!skb) {
printk(KERN_ERR "capidrv::send_message: can't allocate mem\n");
return;
}
memcpy(skb_put(skb, len), cmsg->buf, len);
if (capi20_put_message(&global.ap, skb) != CAPI_NOERROR)
kfree_skb(skb);
}
/* -------- state machine -------------------------------------------- */
struct listenstatechange {
int actstate;
int nextstate;
int event;
};
static struct listenstatechange listentable[] =
{
{ST_LISTEN_NONE, ST_LISTEN_WAIT_CONF, EV_LISTEN_REQ},
{ST_LISTEN_ACTIVE, ST_LISTEN_ACTIVE_WAIT_CONF, EV_LISTEN_REQ},
{ST_LISTEN_WAIT_CONF, ST_LISTEN_NONE, EV_LISTEN_CONF_ERROR},
{ST_LISTEN_ACTIVE_WAIT_CONF, ST_LISTEN_ACTIVE, EV_LISTEN_CONF_ERROR},
{ST_LISTEN_WAIT_CONF, ST_LISTEN_NONE, EV_LISTEN_CONF_EMPTY},
{ST_LISTEN_ACTIVE_WAIT_CONF, ST_LISTEN_NONE, EV_LISTEN_CONF_EMPTY},
{ST_LISTEN_WAIT_CONF, ST_LISTEN_ACTIVE, EV_LISTEN_CONF_OK},
{ST_LISTEN_ACTIVE_WAIT_CONF, ST_LISTEN_ACTIVE, EV_LISTEN_CONF_OK},
{},
};
static void listen_change_state(capidrv_contr * card, int event)
{
struct listenstatechange *p = listentable;
while (p->event) {
if (card->state == p->actstate && p->event == event) {
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: listen_change_state %d -> %d\n",
card->contrnr, card->state, p->nextstate);
card->state = p->nextstate;
return;
}
p++;
}
printk(KERN_ERR "capidrv-%d: listen_change_state state=%d event=%d ????\n",
card->contrnr, card->state, event);
}
/* ------------------------------------------------------------------ */
static void p0(capidrv_contr * card, capidrv_plci * plci)
{
isdn_ctrl cmd;
card->bchans[plci->chan].contr = NULL;
cmd.command = ISDN_STAT_DHUP;
cmd.driver = card->myid;
cmd.arg = plci->chan;
card->interface.statcallb(&cmd);
free_plci(card, plci);
}
/* ------------------------------------------------------------------ */
struct plcistatechange {
int actstate;
int nextstate;
int event;
void (*changefunc) (capidrv_contr * card, capidrv_plci * plci);
};
static struct plcistatechange plcitable[] =
{
/* P-0 */
{ST_PLCI_NONE, ST_PLCI_OUTGOING, EV_PLCI_CONNECT_REQ, NULL},
{ST_PLCI_NONE, ST_PLCI_ALLOCATED, EV_PLCI_FACILITY_IND_UP, NULL},
{ST_PLCI_NONE, ST_PLCI_INCOMING, EV_PLCI_CONNECT_IND, NULL},
{ST_PLCI_NONE, ST_PLCI_RESUMEING, EV_PLCI_RESUME_REQ, NULL},
/* P-0.1 */
{ST_PLCI_OUTGOING, ST_PLCI_NONE, EV_PLCI_CONNECT_CONF_ERROR, p0},
{ST_PLCI_OUTGOING, ST_PLCI_ALLOCATED, EV_PLCI_CONNECT_CONF_OK, NULL},
/* P-1 */
{ST_PLCI_ALLOCATED, ST_PLCI_ACTIVE, EV_PLCI_CONNECT_ACTIVE_IND, NULL},
{ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
{ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
{ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
/* P-ACT */
{ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
{ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
{ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
{ST_PLCI_ACTIVE, ST_PLCI_HELD, EV_PLCI_HOLD_IND, NULL},
{ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_SUSPEND_IND, NULL},
/* P-2 */
{ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_CONNECT_REJECT, NULL},
{ST_PLCI_INCOMING, ST_PLCI_FACILITY_IND, EV_PLCI_FACILITY_IND_UP, NULL},
{ST_PLCI_INCOMING, ST_PLCI_ACCEPTING, EV_PLCI_CONNECT_RESP, NULL},
{ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
{ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
{ST_PLCI_INCOMING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
{ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_CD_IND, NULL},
/* P-3 */
{ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_CONNECT_REJECT, NULL},
{ST_PLCI_FACILITY_IND, ST_PLCI_ACCEPTING, EV_PLCI_CONNECT_ACTIVE_IND, NULL},
{ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
{ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
{ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
/* P-4 */
{ST_PLCI_ACCEPTING, ST_PLCI_ACTIVE, EV_PLCI_CONNECT_ACTIVE_IND, NULL},
{ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
{ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
{ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
/* P-5 */
{ST_PLCI_DISCONNECTING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
/* P-6 */
{ST_PLCI_DISCONNECTED, ST_PLCI_NONE, EV_PLCI_DISCONNECT_RESP, p0},
/* P-0.Res */
{ST_PLCI_RESUMEING, ST_PLCI_NONE, EV_PLCI_RESUME_CONF_ERROR, p0},
{ST_PLCI_RESUMEING, ST_PLCI_RESUME, EV_PLCI_RESUME_CONF_OK, NULL},
/* P-RES */
{ST_PLCI_RESUME, ST_PLCI_ACTIVE, EV_PLCI_RESUME_IND, NULL},
/* P-HELD */
{ST_PLCI_HELD, ST_PLCI_ACTIVE, EV_PLCI_RETRIEVE_IND, NULL},
{},
};
static void plci_change_state(capidrv_contr * card, capidrv_plci * plci, int event)
{
struct plcistatechange *p = plcitable;
while (p->event) {
if (plci->state == p->actstate && p->event == event) {
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: plci_change_state:0x%x %d -> %d\n",
card->contrnr, plci->plci, plci->state, p->nextstate);
plci->state = p->nextstate;
if (p->changefunc)
p->changefunc(card, plci);
return;
}
p++;
}
printk(KERN_ERR "capidrv-%d: plci_change_state:0x%x state=%d event=%d ????\n",
card->contrnr, plci->plci, plci->state, event);
}
/* ------------------------------------------------------------------ */
static _cmsg cmsg;
static void n0(capidrv_contr * card, capidrv_ncci * ncci)
{
isdn_ctrl cmd;
capi_fill_DISCONNECT_REQ(&cmsg,
global.ap.applid,
card->msgid++,
ncci->plcip->plci,
NULL, /* BChannelinformation */
NULL, /* Keypadfacility */
NULL, /* Useruserdata */ /* $$$$ */
NULL /* Facilitydataarray */
);
plci_change_state(card, ncci->plcip, EV_PLCI_DISCONNECT_REQ);
send_message(card, &cmsg);
cmd.command = ISDN_STAT_BHUP;
cmd.driver = card->myid;
cmd.arg = ncci->chan;
card->interface.statcallb(&cmd);
free_ncci(card, ncci);
}
/* ------------------------------------------------------------------ */
struct nccistatechange {
int actstate;
int nextstate;
int event;
void (*changefunc) (capidrv_contr * card, capidrv_ncci * ncci);
};
static struct nccistatechange nccitable[] =
{
/* N-0 */
{ST_NCCI_NONE, ST_NCCI_OUTGOING, EV_NCCI_CONNECT_B3_REQ, NULL},
{ST_NCCI_NONE, ST_NCCI_INCOMING, EV_NCCI_CONNECT_B3_IND, NULL},
/* N-0.1 */
{ST_NCCI_OUTGOING, ST_NCCI_ALLOCATED, EV_NCCI_CONNECT_B3_CONF_OK, NULL},
{ST_NCCI_OUTGOING, ST_NCCI_NONE, EV_NCCI_CONNECT_B3_CONF_ERROR, n0},
/* N-1 */
{ST_NCCI_INCOMING, ST_NCCI_DISCONNECTING, EV_NCCI_CONNECT_B3_REJECT, NULL},
{ST_NCCI_INCOMING, ST_NCCI_ALLOCATED, EV_NCCI_CONNECT_B3_RESP, NULL},
{ST_NCCI_INCOMING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
{ST_NCCI_INCOMING, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
/* N-2 */
{ST_NCCI_ALLOCATED, ST_NCCI_ACTIVE, EV_NCCI_CONNECT_B3_ACTIVE_IND, NULL},
{ST_NCCI_ALLOCATED, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
{ST_NCCI_ALLOCATED, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
/* N-ACT */
{ST_NCCI_ACTIVE, ST_NCCI_ACTIVE, EV_NCCI_RESET_B3_IND, NULL},
{ST_NCCI_ACTIVE, ST_NCCI_RESETING, EV_NCCI_RESET_B3_REQ, NULL},
{ST_NCCI_ACTIVE, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
{ST_NCCI_ACTIVE, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
/* N-3 */
{ST_NCCI_RESETING, ST_NCCI_ACTIVE, EV_NCCI_RESET_B3_IND, NULL},
{ST_NCCI_RESETING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
{ST_NCCI_RESETING, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
/* N-4 */
{ST_NCCI_DISCONNECTING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
{ST_NCCI_DISCONNECTING, ST_NCCI_PREVIOUS, EV_NCCI_DISCONNECT_B3_CONF_ERROR,NULL},
/* N-5 */
{ST_NCCI_DISCONNECTED, ST_NCCI_NONE, EV_NCCI_DISCONNECT_B3_RESP, n0},
{},
};
static void ncci_change_state(capidrv_contr * card, capidrv_ncci * ncci, int event)
{
struct nccistatechange *p = nccitable;
while (p->event) {
if (ncci->state == p->actstate && p->event == event) {
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: ncci_change_state:0x%x %d -> %d\n",
card->contrnr, ncci->ncci, ncci->state, p->nextstate);
if (p->nextstate == ST_NCCI_PREVIOUS) {
ncci->state = ncci->oldstate;
ncci->oldstate = p->actstate;
} else {
ncci->oldstate = p->actstate;
ncci->state = p->nextstate;
}
if (p->changefunc)
p->changefunc(card, ncci);
return;
}
p++;
}
printk(KERN_ERR "capidrv-%d: ncci_change_state:0x%x state=%d event=%d ????\n",
card->contrnr, ncci->ncci, ncci->state, event);
}
/* ------------------------------------------------------------------- */
static inline int new_bchan(capidrv_contr * card)
{
int i;
for (i = 0; i < card->nbchan; i++) {
if (card->bchans[i].plcip == NULL) {
card->bchans[i].disconnecting = 0;
return i;
}
}
return -1;
}
/* ------------------------------------------------------------------- */
static void handle_controller(_cmsg * cmsg)
{
capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
if (!card) {
printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController & 0x7f);
return;
}
switch (CAPICMD(cmsg->Command, cmsg->Subcommand)) {
case CAPI_LISTEN_CONF: /* Controller */
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: listenconf Info=0x%4x (%s) cipmask=0x%x\n",
card->contrnr, cmsg->Info, capi_info2str(cmsg->Info), card->cipmask);
if (cmsg->Info) {
listen_change_state(card, EV_LISTEN_CONF_ERROR);
} else if (card->cipmask == 0) {
listen_change_state(card, EV_LISTEN_CONF_EMPTY);
} else {
listen_change_state(card, EV_LISTEN_CONF_OK);
}
break;
case CAPI_MANUFACTURER_IND: /* Controller */
if ( cmsg->ManuID == 0x214D5641
&& cmsg->Class == 0
&& cmsg->Function == 1) {
u8 *data = cmsg->ManuData+3;
u16 len = cmsg->ManuData[0];
u16 layer;
int direction;
if (len == 255) {
len = (cmsg->ManuData[1] | (cmsg->ManuData[2] << 8));
data += 2;
}
len -= 2;
layer = ((*(data-1)) << 8) | *(data-2);
if (layer & 0x300)
direction = (layer & 0x200) ? 0 : 1;
else direction = (layer & 0x800) ? 0 : 1;
if (layer & 0x0C00) {
if ((layer & 0xff) == 0x80) {
handle_dtrace_data(card, direction, 1, data, len);
break;
}
} else if ((layer & 0xff) < 0x80) {
handle_dtrace_data(card, direction, 0, data, len);
break;
}
printk(KERN_INFO "capidrv-%d: %s from controller 0x%x layer 0x%x, ignored\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController, layer);
break;
}
goto ignored;
case CAPI_MANUFACTURER_CONF: /* Controller */
if (cmsg->ManuID == 0x214D5641) {
char *s = NULL;
switch (cmsg->Class) {
case 0: break;
case 1: s = "unknown class"; break;
case 2: s = "unknown function"; break;
default: s = "unknown error"; break;
}
if (s)
printk(KERN_INFO "capidrv-%d: %s from controller 0x%x function %d: %s\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController,
cmsg->Function, s);
break;
}
goto ignored;
case CAPI_FACILITY_IND: /* Controller/plci/ncci */
goto ignored;
case CAPI_FACILITY_CONF: /* Controller/plci/ncci */
goto ignored;
case CAPI_INFO_IND: /* Controller/plci */
goto ignored;
case CAPI_INFO_CONF: /* Controller/plci */
goto ignored;
default:
printk(KERN_ERR "capidrv-%d: got %s from controller 0x%x ???",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController);
}
return;
ignored:
printk(KERN_INFO "capidrv-%d: %s from controller 0x%x ignored\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController);
}
static void handle_incoming_call(capidrv_contr * card, _cmsg * cmsg)
{
capidrv_plci *plcip;
capidrv_bchan *bchan;
isdn_ctrl cmd;
int chan;
if ((chan = new_bchan(card)) == -1) {
printk(KERN_ERR "capidrv-%d: incoming call on not existing bchan ?\n", card->contrnr);
return;
}
bchan = &card->bchans[chan];
if ((plcip = new_plci(card, chan)) == NULL) {
printk(KERN_ERR "capidrv-%d: incoming call: no memory, sorry.\n", card->contrnr);
return;
}
bchan->incoming = 1;
plcip->plci = cmsg->adr.adrPLCI;
plci_change_state(card, plcip, EV_PLCI_CONNECT_IND);
cmd.command = ISDN_STAT_ICALL;
cmd.driver = card->myid;
cmd.arg = chan;
memset(&cmd.parm.setup, 0, sizeof(cmd.parm.setup));
strncpy(cmd.parm.setup.phone,
cmsg->CallingPartyNumber + 3,
cmsg->CallingPartyNumber[0] - 2);
strncpy(cmd.parm.setup.eazmsn,
cmsg->CalledPartyNumber + 2,
cmsg->CalledPartyNumber[0] - 1);
cmd.parm.setup.si1 = cip2si1(cmsg->CIPValue);
cmd.parm.setup.si2 = cip2si2(cmsg->CIPValue);
cmd.parm.setup.plan = cmsg->CallingPartyNumber[1];
cmd.parm.setup.screen = cmsg->CallingPartyNumber[2];
printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s\n",
card->contrnr,
cmd.parm.setup.phone,
cmd.parm.setup.si1,
cmd.parm.setup.si2,
cmd.parm.setup.eazmsn);
if (cmd.parm.setup.si1 == 1 && cmd.parm.setup.si2 != 0) {
printk(KERN_INFO "capidrv-%d: patching si2=%d to 0 for VBOX\n",
card->contrnr,
cmd.parm.setup.si2);
cmd.parm.setup.si2 = 0;
}
switch (card->interface.statcallb(&cmd)) {
case 0:
case 3:
/* No device matching this call.
* and isdn_common.c has send a HANGUP command
* which is ignored in state ST_PLCI_INCOMING,
* so we send RESP to ignore the call
*/
capi_cmsg_answer(cmsg);
cmsg->Reject = 1; /* ignore */
plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
send_message(card, cmsg);
printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s ignored\n",
card->contrnr,
cmd.parm.setup.phone,
cmd.parm.setup.si1,
cmd.parm.setup.si2,
cmd.parm.setup.eazmsn);
break;
case 1:
/* At least one device matching this call (RING on ttyI)
* HL-driver may send ALERTING on the D-channel in this
* case.
* really means: RING on ttyI or a net interface
* accepted this call already.
*
* If the call was accepted, state has already changed,
* and CONNECT_RESP already sent.
*/
if (plcip->state == ST_PLCI_INCOMING) {
printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s tty alerting\n",
card->contrnr,
cmd.parm.setup.phone,
cmd.parm.setup.si1,
cmd.parm.setup.si2,
cmd.parm.setup.eazmsn);
capi_fill_ALERT_REQ(cmsg,
global.ap.applid,
card->msgid++,
plcip->plci, /* adr */
NULL,/* BChannelinformation */
NULL,/* Keypadfacility */
NULL,/* Useruserdata */
NULL /* Facilitydataarray */
);
plcip->msgid = cmsg->Messagenumber;
send_message(card, cmsg);
} else {
printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s on netdev\n",
card->contrnr,
cmd.parm.setup.phone,
cmd.parm.setup.si1,
cmd.parm.setup.si2,
cmd.parm.setup.eazmsn);
}
break;
case 2: /* Call will be rejected. */
capi_cmsg_answer(cmsg);
cmsg->Reject = 2; /* reject call, normal call clearing */
plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
send_message(card, cmsg);
break;
default:
/* An error happened. (Invalid parameters for example.) */
capi_cmsg_answer(cmsg);
cmsg->Reject = 8; /* reject call,
destination out of order */
plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
send_message(card, cmsg);
break;
}
return;
}
static void handle_plci(_cmsg * cmsg)
{
capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
capidrv_plci *plcip;
isdn_ctrl cmd;
_cdebbuf *cdb;
if (!card) {
printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController & 0x7f);
return;
}
switch (CAPICMD(cmsg->Command, cmsg->Subcommand)) {
case CAPI_DISCONNECT_IND: /* plci */
if (cmsg->Reason) {
printk(KERN_INFO "capidrv-%d: %s reason 0x%x (%s) for plci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Reason, capi_info2str(cmsg->Reason), cmsg->adr.adrPLCI);
}
if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI))) {
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
goto notfound;
}
card->bchans[plcip->chan].disconnecting = 1;
plci_change_state(card, plcip, EV_PLCI_DISCONNECT_IND);
capi_cmsg_answer(cmsg);
plci_change_state(card, plcip, EV_PLCI_DISCONNECT_RESP);
send_message(card, cmsg);
break;
case CAPI_DISCONNECT_CONF: /* plci */
if (cmsg->Info) {
printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for plci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Info, capi_info2str(cmsg->Info),
cmsg->adr.adrPLCI);
}
if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI)))
goto notfound;
card->bchans[plcip->chan].disconnecting = 1;
break;
case CAPI_ALERT_CONF: /* plci */
if (cmsg->Info) {
printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for plci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Info, capi_info2str(cmsg->Info),
cmsg->adr.adrPLCI);
}
break;
case CAPI_CONNECT_IND: /* plci */
handle_incoming_call(card, cmsg);
break;
case CAPI_CONNECT_CONF: /* plci */
if (cmsg->Info) {
printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for plci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Info, capi_info2str(cmsg->Info),
cmsg->adr.adrPLCI);
}
if (!(plcip = find_plci_by_msgid(card, cmsg->Messagenumber)))
goto notfound;
plcip->plci = cmsg->adr.adrPLCI;
if (cmsg->Info) {
plci_change_state(card, plcip, EV_PLCI_CONNECT_CONF_ERROR);
} else {
plci_change_state(card, plcip, EV_PLCI_CONNECT_CONF_OK);
}
break;
case CAPI_CONNECT_ACTIVE_IND: /* plci */
if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI)))
goto notfound;
if (card->bchans[plcip->chan].incoming) {
capi_cmsg_answer(cmsg);
plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND);
send_message(card, cmsg);
} else {
capidrv_ncci *nccip;
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
nccip = new_ncci(card, plcip, cmsg->adr.adrPLCI);
if (!nccip) {
printk(KERN_ERR "capidrv-%d: no mem for ncci, sorry\n", card->contrnr);
break; /* $$$$ */
}
capi_fill_CONNECT_B3_REQ(cmsg,
global.ap.applid,
card->msgid++,
plcip->plci, /* adr */
NULL /* NCPI */
);
nccip->msgid = cmsg->Messagenumber;
plci_change_state(card, plcip,
EV_PLCI_CONNECT_ACTIVE_IND);
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_REQ);
send_message(card, cmsg);
cmd.command = ISDN_STAT_DCONN;
cmd.driver = card->myid;
cmd.arg = plcip->chan;
card->interface.statcallb(&cmd);
}
break;
case CAPI_INFO_IND: /* Controller/plci */
if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI)))
goto notfound;
if (cmsg->InfoNumber == 0x4000) {
if (cmsg->InfoElement[0] == 4) {
cmd.command = ISDN_STAT_CINF;
cmd.driver = card->myid;
cmd.arg = plcip->chan;
sprintf(cmd.parm.num, "%lu",
(unsigned long)
((u32) cmsg->InfoElement[1]
| ((u32) (cmsg->InfoElement[2]) << 8)
| ((u32) (cmsg->InfoElement[3]) << 16)
| ((u32) (cmsg->InfoElement[4]) << 24)));
card->interface.statcallb(&cmd);
break;
}
}
cdb = capi_cmsg2str(cmsg);
if (cdb) {
printk(KERN_WARNING "capidrv-%d: %s\n",
card->contrnr, cdb->buf);
cdebbuf_free(cdb);
} else
printk(KERN_WARNING "capidrv-%d: CAPI_INFO_IND InfoNumber %x not handled\n",
card->contrnr, cmsg->InfoNumber);
break;
case CAPI_CONNECT_ACTIVE_CONF: /* plci */
goto ignored;
case CAPI_SELECT_B_PROTOCOL_CONF: /* plci */
goto ignored;
case CAPI_FACILITY_IND: /* Controller/plci/ncci */
goto ignored;
case CAPI_FACILITY_CONF: /* Controller/plci/ncci */
goto ignored;
case CAPI_INFO_CONF: /* Controller/plci */
goto ignored;
default:
printk(KERN_ERR "capidrv-%d: got %s for plci 0x%x ???",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrPLCI);
}
return;
ignored:
printk(KERN_INFO "capidrv-%d: %s for plci 0x%x ignored\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrPLCI);
return;
notfound:
printk(KERN_ERR "capidrv-%d: %s: plci 0x%x not found\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrPLCI);
return;
}
static void handle_ncci(_cmsg * cmsg)
{
capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
capidrv_plci *plcip;
capidrv_ncci *nccip;
isdn_ctrl cmd;
int len;
if (!card) {
printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController & 0x7f);
return;
}
switch (CAPICMD(cmsg->Command, cmsg->Subcommand)) {
case CAPI_CONNECT_B3_ACTIVE_IND: /* ncci */
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
goto notfound;
capi_cmsg_answer(cmsg);
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_ACTIVE_IND);
send_message(card, cmsg);
cmd.command = ISDN_STAT_BCONN;
cmd.driver = card->myid;
cmd.arg = nccip->chan;
card->interface.statcallb(&cmd);
printk(KERN_INFO "capidrv-%d: chan %d up with ncci 0x%x\n",
card->contrnr, nccip->chan, nccip->ncci);
break;
case CAPI_CONNECT_B3_ACTIVE_CONF: /* ncci */
goto ignored;
case CAPI_CONNECT_B3_IND: /* ncci */
plcip = find_plci_by_ncci(card, cmsg->adr.adrNCCI);
if (plcip) {
nccip = new_ncci(card, plcip, cmsg->adr.adrNCCI);
if (nccip) {
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_IND);
capi_fill_CONNECT_B3_RESP(cmsg,
global.ap.applid,
card->msgid++,
nccip->ncci, /* adr */
0, /* Reject */
NULL /* NCPI */
);
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_RESP);
send_message(card, cmsg);
break;
}
printk(KERN_ERR "capidrv-%d: no mem for ncci, sorry\n", card->contrnr);
} else {
printk(KERN_ERR "capidrv-%d: %s: plci for ncci 0x%x not found\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrNCCI);
}
capi_fill_CONNECT_B3_RESP(cmsg,
global.ap.applid,
card->msgid++,
cmsg->adr.adrNCCI,
2, /* Reject */
NULL /* NCPI */
);
send_message(card, cmsg);
break;
case CAPI_CONNECT_B3_CONF: /* ncci */
if (!(nccip = find_ncci_by_msgid(card,
cmsg->adr.adrNCCI,
cmsg->Messagenumber)))
goto notfound;
nccip->ncci = cmsg->adr.adrNCCI;
if (cmsg->Info) {
printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for ncci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Info, capi_info2str(cmsg->Info),
cmsg->adr.adrNCCI);
}
if (cmsg->Info)
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_CONF_ERROR);
else
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_CONF_OK);
break;
case CAPI_CONNECT_B3_T90_ACTIVE_IND: /* ncci */
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
break;
case CAPI_DATA_B3_IND: /* ncci */
/* handled in handle_data() */
goto ignored;
case CAPI_DATA_B3_CONF: /* ncci */
if (cmsg->Info) {
printk(KERN_WARNING "CAPI_DATA_B3_CONF: Info %x - %s\n",
cmsg->Info, capi_info2str(cmsg->Info));
}
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
goto notfound;
len = capidrv_del_ack(nccip, cmsg->DataHandle);
if (len < 0)
break;
cmd.command = ISDN_STAT_BSENT;
cmd.driver = card->myid;
cmd.arg = nccip->chan;
cmd.parm.length = len;
card->interface.statcallb(&cmd);
break;
case CAPI_DISCONNECT_B3_IND: /* ncci */
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
goto notfound;
card->bchans[nccip->chan].disconnecting = 1;
ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_IND);
capi_cmsg_answer(cmsg);
ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_RESP);
send_message(card, cmsg);
break;
case CAPI_DISCONNECT_B3_CONF: /* ncci */
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
goto notfound;
if (cmsg->Info) {
printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for ncci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Info, capi_info2str(cmsg->Info),
cmsg->adr.adrNCCI);
ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_CONF_ERROR);
}
break;
case CAPI_RESET_B3_IND: /* ncci */
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
goto notfound;
ncci_change_state(card, nccip, EV_NCCI_RESET_B3_IND);
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
break;
case CAPI_RESET_B3_CONF: /* ncci */
goto ignored; /* $$$$ */
case CAPI_FACILITY_IND: /* Controller/plci/ncci */
goto ignored;
case CAPI_FACILITY_CONF: /* Controller/plci/ncci */
goto ignored;
default:
printk(KERN_ERR "capidrv-%d: got %s for ncci 0x%x ???",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrNCCI);
}
return;
ignored:
printk(KERN_INFO "capidrv-%d: %s for ncci 0x%x ignored\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrNCCI);
return;
notfound:
printk(KERN_ERR "capidrv-%d: %s: ncci 0x%x not found\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrNCCI);
}
static void handle_data(_cmsg * cmsg, struct sk_buff *skb)
{
capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
capidrv_ncci *nccip;
if (!card) {
printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController & 0x7f);
kfree_skb(skb);
return;
}
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI))) {
printk(KERN_ERR "capidrv-%d: %s: ncci 0x%x not found\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrNCCI);
kfree_skb(skb);
return;
}
(void) skb_pull(skb, CAPIMSG_LEN(skb->data));
card->interface.rcvcallb_skb(card->myid, nccip->chan, skb);
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
}
static _cmsg s_cmsg;
static void capidrv_recv_message(struct capi20_appl *ap, struct sk_buff *skb)
{
capi_message2cmsg(&s_cmsg, skb->data);
if (debugmode > 3) {
_cdebbuf *cdb = capi_cmsg2str(&s_cmsg);
if (cdb) {
printk(KERN_DEBUG "%s: applid=%d %s\n", __func__,
ap->applid, cdb->buf);
cdebbuf_free(cdb);
} else
printk(KERN_DEBUG "%s: applid=%d %s not traced\n",
__func__, ap->applid,
capi_cmd2str(s_cmsg.Command, s_cmsg.Subcommand));
}
if (s_cmsg.Command == CAPI_DATA_B3
&& s_cmsg.Subcommand == CAPI_IND) {
handle_data(&s_cmsg, skb);
return;
}
if ((s_cmsg.adr.adrController & 0xffffff00) == 0)
handle_controller(&s_cmsg);
else if ((s_cmsg.adr.adrPLCI & 0xffff0000) == 0)
handle_plci(&s_cmsg);
else
handle_ncci(&s_cmsg);
/*
* data of skb used in s_cmsg,
* free data when s_cmsg is not used again
* thanks to Lars Heete <hel@admin.de>
*/
kfree_skb(skb);
}
/* ------------------------------------------------------------------- */
#define PUTBYTE_TO_STATUS(card, byte) \
do { \
*(card)->q931_write++ = (byte); \
if ((card)->q931_write > (card)->q931_end) \
(card)->q931_write = (card)->q931_buf; \
} while (0)
static void handle_dtrace_data(capidrv_contr *card,
int send, int level2, u8 *data, u16 len)
{
u8 *p, *end;
isdn_ctrl cmd;
if (!len) {
printk(KERN_DEBUG "capidrv-%d: avmb1_q931_data: len == %d\n",
card->contrnr, len);
return;
}
if (level2) {
PUTBYTE_TO_STATUS(card, 'D');
PUTBYTE_TO_STATUS(card, '2');
PUTBYTE_TO_STATUS(card, send ? '>' : '<');
PUTBYTE_TO_STATUS(card, ':');
} else {
PUTBYTE_TO_STATUS(card, 'D');
PUTBYTE_TO_STATUS(card, '3');
PUTBYTE_TO_STATUS(card, send ? '>' : '<');
PUTBYTE_TO_STATUS(card, ':');
}
for (p = data, end = data+len; p < end; p++) {
u8 w;
PUTBYTE_TO_STATUS(card, ' ');
w = (*p >> 4) & 0xf;
PUTBYTE_TO_STATUS(card, (w < 10) ? '0'+w : 'A'-10+w);
w = *p & 0xf;
PUTBYTE_TO_STATUS(card, (w < 10) ? '0'+w : 'A'-10+w);
}
PUTBYTE_TO_STATUS(card, '\n');
cmd.command = ISDN_STAT_STAVAIL;
cmd.driver = card->myid;
cmd.arg = len*3+5;
card->interface.statcallb(&cmd);
}
/* ------------------------------------------------------------------- */
static _cmsg cmdcmsg;
static int capidrv_ioctl(isdn_ctrl * c, capidrv_contr * card)
{
switch (c->arg) {
case 1:
debugmode = (int)(*((unsigned int *)c->parm.num));
printk(KERN_DEBUG "capidrv-%d: debugmode=%d\n",
card->contrnr, debugmode);
return 0;
default:
printk(KERN_DEBUG "capidrv-%d: capidrv_ioctl(%ld) called ??\n",
card->contrnr, c->arg);
return -EINVAL;
}
return -EINVAL;
}
/*
* Handle leased lines (CAPI-Bundling)
*/
struct internal_bchannelinfo {
unsigned short channelalloc;
unsigned short operation;
unsigned char cmask[31];
};
static int decodeFVteln(char *teln, unsigned long *bmaskp, int *activep)
{
unsigned long bmask = 0;
int active = !0;
char *s;
int i;
if (strncmp(teln, "FV:", 3) != 0)
return 1;
s = teln + 3;
while (*s && *s == ' ') s++;
if (!*s) return -2;
if (*s == 'p' || *s == 'P') {
active = 0;
s++;
}
if (*s == 'a' || *s == 'A') {
active = !0;
s++;
}
while (*s) {
int digit1 = 0;
int digit2 = 0;
if (!isdigit(*s)) return -3;
while (isdigit(*s)) { digit1 = digit1*10 + (*s - '0'); s++; }
if (digit1 <= 0 || digit1 > 30) return -4;
if (*s == 0 || *s == ',' || *s == ' ') {
bmask |= (1 << digit1);
digit1 = 0;
if (*s) s++;
continue;
}
if (*s != '-') return -5;
s++;
if (!isdigit(*s)) return -3;
while (isdigit(*s)) { digit2 = digit2*10 + (*s - '0'); s++; }
if (digit2 <= 0 || digit2 > 30) return -4;
if (*s == 0 || *s == ',' || *s == ' ') {
if (digit1 > digit2)
for (i = digit2; i <= digit1 ; i++)
bmask |= (1 << i);
else
for (i = digit1; i <= digit2 ; i++)
bmask |= (1 << i);
digit1 = digit2 = 0;
if (*s) s++;
continue;
}
return -6;
}
if (activep) *activep = active;
if (bmaskp) *bmaskp = bmask;
return 0;
}
static int FVteln2capi20(char *teln, u8 AdditionalInfo[1+2+2+31])
{
unsigned long bmask;
int active;
int rc, i;
rc = decodeFVteln(teln, &bmask, &active);
if (rc) return rc;
/* Length */
AdditionalInfo[0] = 2+2+31;
/* Channel: 3 => use channel allocation */
AdditionalInfo[1] = 3; AdditionalInfo[2] = 0;
/* Operation: 0 => DTE mode, 1 => DCE mode */
if (active) {
AdditionalInfo[3] = 0; AdditionalInfo[4] = 0;
} else {
AdditionalInfo[3] = 1; AdditionalInfo[4] = 0;
}
/* Channel mask array */
AdditionalInfo[5] = 0; /* no D-Channel */
for (i=1; i <= 30; i++)
AdditionalInfo[5+i] = (bmask & (1 << i)) ? 0xff : 0;
return 0;
}
static int capidrv_command(isdn_ctrl * c, capidrv_contr * card)
{
isdn_ctrl cmd;
struct capidrv_bchan *bchan;
struct capidrv_plci *plcip;
u8 AdditionalInfo[1+2+2+31];
int rc, isleasedline = 0;
if (c->command == ISDN_CMD_IOCTL)
return capidrv_ioctl(c, card);
switch (c->command) {
case ISDN_CMD_DIAL:{
u8 calling[ISDN_MSNLEN + 3];
u8 called[ISDN_MSNLEN + 2];
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_DIAL(ch=%ld,\"%s,%d,%d,%s\")\n",
card->contrnr,
c->arg,
c->parm.setup.phone,
c->parm.setup.si1,
c->parm.setup.si2,
c->parm.setup.eazmsn);
bchan = &card->bchans[c->arg % card->nbchan];
if (bchan->plcip) {
printk(KERN_ERR "capidrv-%d: dail ch=%ld,\"%s,%d,%d,%s\" in use (plci=0x%x)\n",
card->contrnr,
c->arg,
c->parm.setup.phone,
c->parm.setup.si1,
c->parm.setup.si2,
c->parm.setup.eazmsn,
bchan->plcip->plci);
return 0;
}
bchan->si1 = c->parm.setup.si1;
bchan->si2 = c->parm.setup.si2;
strncpy(bchan->num, c->parm.setup.phone, sizeof(bchan->num));
strncpy(bchan->mynum, c->parm.setup.eazmsn, sizeof(bchan->mynum));
rc = FVteln2capi20(bchan->num, AdditionalInfo);
isleasedline = (rc == 0);
if (rc < 0)
printk(KERN_ERR "capidrv-%d: WARNING: invalid leased linedefinition \"%s\"\n", card->contrnr, bchan->num);
if (isleasedline) {
calling[0] = 0;
called[0] = 0;
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: connecting leased line\n", card->contrnr);
} else {
calling[0] = strlen(bchan->mynum) + 2;
calling[1] = 0;
calling[2] = 0x80;
strncpy(calling + 3, bchan->mynum, ISDN_MSNLEN);
called[0] = strlen(bchan->num) + 1;
called[1] = 0x80;
strncpy(called + 2, bchan->num, ISDN_MSNLEN);
}
capi_fill_CONNECT_REQ(&cmdcmsg,
global.ap.applid,
card->msgid++,
card->contrnr, /* adr */
si2cip(bchan->si1, bchan->si2), /* cipvalue */
called, /* CalledPartyNumber */
calling, /* CallingPartyNumber */
NULL, /* CalledPartySubaddress */
NULL, /* CallingPartySubaddress */
b1prot(bchan->l2, bchan->l3), /* B1protocol */
b2prot(bchan->l2, bchan->l3), /* B2protocol */
b3prot(bchan->l2, bchan->l3), /* B3protocol */
b1config(bchan->l2, bchan->l3), /* B1configuration */
NULL, /* B2configuration */
NULL, /* B3configuration */
NULL, /* BC */
NULL, /* LLC */
NULL, /* HLC */
/* BChannelinformation */
isleasedline ? AdditionalInfo : NULL,
NULL, /* Keypadfacility */
NULL, /* Useruserdata */
NULL /* Facilitydataarray */
);
if ((plcip = new_plci(card, (c->arg % card->nbchan))) == NULL) {
cmd.command = ISDN_STAT_DHUP;
cmd.driver = card->myid;
cmd.arg = (c->arg % card->nbchan);
card->interface.statcallb(&cmd);
return -1;
}
plcip->msgid = cmdcmsg.Messagenumber;
plcip->leasedline = isleasedline;
plci_change_state(card, plcip, EV_PLCI_CONNECT_REQ);
send_message(card, &cmdcmsg);
return 0;
}
case ISDN_CMD_ACCEPTD:
bchan = &card->bchans[c->arg % card->nbchan];
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_ACCEPTD(ch=%ld) l2=%d l3=%d\n",
card->contrnr,
c->arg, bchan->l2, bchan->l3);
capi_fill_CONNECT_RESP(&cmdcmsg,
global.ap.applid,
card->msgid++,
bchan->plcip->plci, /* adr */
0, /* Reject */
b1prot(bchan->l2, bchan->l3), /* B1protocol */
b2prot(bchan->l2, bchan->l3), /* B2protocol */
b3prot(bchan->l2, bchan->l3), /* B3protocol */
b1config(bchan->l2, bchan->l3), /* B1configuration */
NULL, /* B2configuration */
NULL, /* B3configuration */
NULL, /* ConnectedNumber */
NULL, /* ConnectedSubaddress */
NULL, /* LLC */
NULL, /* BChannelinformation */
NULL, /* Keypadfacility */
NULL, /* Useruserdata */
NULL /* Facilitydataarray */
);
capi_cmsg2message(&cmdcmsg, cmdcmsg.buf);
plci_change_state(card, bchan->plcip, EV_PLCI_CONNECT_RESP);
send_message(card, &cmdcmsg);
return 0;
case ISDN_CMD_ACCEPTB:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_ACCEPTB(ch=%ld)\n",
card->contrnr,
c->arg);
return -ENOSYS;
case ISDN_CMD_HANGUP:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_HANGUP(ch=%ld)\n",
card->contrnr,
c->arg);
bchan = &card->bchans[c->arg % card->nbchan];
if (bchan->disconnecting) {
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: chan %ld already disconnecting ...\n",
card->contrnr,
c->arg);
return 0;
}
if (bchan->nccip) {
bchan->disconnecting = 1;
capi_fill_DISCONNECT_B3_REQ(&cmdcmsg,
global.ap.applid,
card->msgid++,
bchan->nccip->ncci,
NULL /* NCPI */
);
ncci_change_state(card, bchan->nccip, EV_NCCI_DISCONNECT_B3_REQ);
send_message(card, &cmdcmsg);
return 0;
} else if (bchan->plcip) {
if (bchan->plcip->state == ST_PLCI_INCOMING) {
/*
* just ignore, we a called from
* isdn_status_callback(),
* which will return 0 or 2, this is handled
* by the CONNECT_IND handler
*/
bchan->disconnecting = 1;
return 0;
} else if (bchan->plcip->plci) {
bchan->disconnecting = 1;
capi_fill_DISCONNECT_REQ(&cmdcmsg,
global.ap.applid,
card->msgid++,
bchan->plcip->plci,
NULL, /* BChannelinformation */
NULL, /* Keypadfacility */
NULL, /* Useruserdata */
NULL /* Facilitydataarray */
);
plci_change_state(card, bchan->plcip, EV_PLCI_DISCONNECT_REQ);
send_message(card, &cmdcmsg);
return 0;
} else {
printk(KERN_ERR "capidrv-%d: chan %ld disconnect request while waiting for CONNECT_CONF\n",
card->contrnr,
c->arg);
return -EINVAL;
}
}
printk(KERN_ERR "capidrv-%d: chan %ld disconnect request on free channel\n",
card->contrnr,
c->arg);
return -EINVAL;
/* ready */
case ISDN_CMD_SETL2:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: set L2 on chan %ld to %ld\n",
card->contrnr,
(c->arg & 0xff), (c->arg >> 8));
bchan = &card->bchans[(c->arg & 0xff) % card->nbchan];
bchan->l2 = (c->arg >> 8);
return 0;
case ISDN_CMD_SETL3:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: set L3 on chan %ld to %ld\n",
card->contrnr,
(c->arg & 0xff), (c->arg >> 8));
bchan = &card->bchans[(c->arg & 0xff) % card->nbchan];
bchan->l3 = (c->arg >> 8);
return 0;
case ISDN_CMD_SETEAZ:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: set EAZ \"%s\" on chan %ld\n",
card->contrnr,
c->parm.num, c->arg);
bchan = &card->bchans[c->arg % card->nbchan];
strncpy(bchan->msn, c->parm.num, ISDN_MSNLEN);
return 0;
case ISDN_CMD_CLREAZ:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: clearing EAZ on chan %ld\n",
card->contrnr, c->arg);
bchan = &card->bchans[c->arg % card->nbchan];
bchan->msn[0] = 0;
return 0;
default:
printk(KERN_ERR "capidrv-%d: ISDN_CMD_%d, Huh?\n",
card->contrnr, c->command);
return -EINVAL;
}
return 0;
}
static int if_command(isdn_ctrl * c)
{
capidrv_contr *card = findcontrbydriverid(c->driver);
if (card)
return capidrv_command(c, card);
printk(KERN_ERR
"capidrv: if_command %d called with invalid driverId %d!\n",
c->command, c->driver);
return -ENODEV;
}
static _cmsg sendcmsg;
static int if_sendbuf(int id, int channel, int doack, struct sk_buff *skb)
{
capidrv_contr *card = findcontrbydriverid(id);
capidrv_bchan *bchan;
capidrv_ncci *nccip;
int len = skb->len;
int msglen;
u16 errcode;
u16 datahandle;
u32 data;
if (!card) {
printk(KERN_ERR "capidrv: if_sendbuf called with invalid driverId %d!\n",
id);
return 0;
}
if (debugmode > 4)
printk(KERN_DEBUG "capidrv-%d: sendbuf len=%d skb=%p doack=%d\n",
card->contrnr, len, skb, doack);
bchan = &card->bchans[channel % card->nbchan];
nccip = bchan->nccip;
if (!nccip || nccip->state != ST_NCCI_ACTIVE) {
printk(KERN_ERR "capidrv-%d: if_sendbuf: %s:%d: chan not up!\n",
card->contrnr, card->name, channel);
return 0;
}
datahandle = nccip->datahandle;
/*
* Here we copy pointer skb->data into the 32-bit 'Data' field.
* The 'Data' field is not used in practice in linux kernel
* (neither in 32 or 64 bit), but should have some value,
* since a CAPI message trace will display it.
*
* The correct value in the 32 bit case is the address of the
* data, in 64 bit it makes no sense, we use 0 there.
*/
#ifdef CONFIG_64BIT
data = 0;
#else
data = (unsigned long) skb->data;
#endif
capi_fill_DATA_B3_REQ(&sendcmsg, global.ap.applid, card->msgid++,
nccip->ncci, /* adr */
data, /* Data */
skb->len, /* DataLength */
datahandle, /* DataHandle */
0 /* Flags */
);
if (capidrv_add_ack(nccip, datahandle, doack ? (int)skb->len : -1) < 0)
return 0;
capi_cmsg2message(&sendcmsg, sendcmsg.buf);
msglen = CAPIMSG_LEN(sendcmsg.buf);
if (skb_headroom(skb) < msglen) {
struct sk_buff *nskb = skb_realloc_headroom(skb, msglen);
if (!nskb) {
printk(KERN_ERR "capidrv-%d: if_sendbuf: no memory\n",
card->contrnr);
(void)capidrv_del_ack(nccip, datahandle);
return 0;
}
printk(KERN_DEBUG "capidrv-%d: only %d bytes headroom, need %d\n",
card->contrnr, skb_headroom(skb), msglen);
memcpy(skb_push(nskb, msglen), sendcmsg.buf, msglen);
errcode = capi20_put_message(&global.ap, nskb);
if (errcode == CAPI_NOERROR) {
dev_kfree_skb(skb);
nccip->datahandle++;
return len;
}
if (debugmode > 3)
printk(KERN_DEBUG "capidrv-%d: sendbuf putmsg ret(%x) - %s\n",
card->contrnr, errcode, capi_info2str(errcode));
(void)capidrv_del_ack(nccip, datahandle);
dev_kfree_skb(nskb);
return errcode == CAPI_SENDQUEUEFULL ? 0 : -1;
} else {
memcpy(skb_push(skb, msglen), sendcmsg.buf, msglen);
errcode = capi20_put_message(&global.ap, skb);
if (errcode == CAPI_NOERROR) {
nccip->datahandle++;
return len;
}
if (debugmode > 3)
printk(KERN_DEBUG "capidrv-%d: sendbuf putmsg ret(%x) - %s\n",
card->contrnr, errcode, capi_info2str(errcode));
skb_pull(skb, msglen);
(void)capidrv_del_ack(nccip, datahandle);
return errcode == CAPI_SENDQUEUEFULL ? 0 : -1;
}
}
static int if_readstat(u8 __user *buf, int len, int id, int channel)
{
capidrv_contr *card = findcontrbydriverid(id);
int count;
u8 __user *p;
if (!card) {
printk(KERN_ERR "capidrv: if_readstat called with invalid driverId %d!\n",
id);
return -ENODEV;
}
for (p=buf, count=0; count < len; p++, count++) {
if (put_user(*card->q931_read++, p))
return -EFAULT;
if (card->q931_read > card->q931_end)
card->q931_read = card->q931_buf;
}
return count;
}
static void enable_dchannel_trace(capidrv_contr *card)
{
u8 manufacturer[CAPI_MANUFACTURER_LEN];
capi_version version;
u16 contr = card->contrnr;
u16 errcode;
u16 avmversion[3];
errcode = capi20_get_manufacturer(contr, manufacturer);
if (errcode != CAPI_NOERROR) {
printk(KERN_ERR "%s: can't get manufacturer (0x%x)\n",
card->name, errcode);
return;
}
if (strstr(manufacturer, "AVM") == NULL) {
printk(KERN_ERR "%s: not from AVM, no d-channel trace possible (%s)\n",
card->name, manufacturer);
return;
}
errcode = capi20_get_version(contr, &version);
if (errcode != CAPI_NOERROR) {
printk(KERN_ERR "%s: can't get version (0x%x)\n",
card->name, errcode);
return;
}
avmversion[0] = (version.majormanuversion >> 4) & 0x0f;
avmversion[1] = (version.majormanuversion << 4) & 0xf0;
avmversion[1] |= (version.minormanuversion >> 4) & 0x0f;
avmversion[2] |= version.minormanuversion & 0x0f;
if (avmversion[0] > 3 || (avmversion[0] == 3 && avmversion[1] > 5)) {
printk(KERN_INFO "%s: D2 trace enabled\n", card->name);
capi_fill_MANUFACTURER_REQ(&cmdcmsg, global.ap.applid,
card->msgid++,
contr,
0x214D5641, /* ManuID */
0, /* Class */
1, /* Function */
(_cstruct)"\004\200\014\000\000");
} else {
printk(KERN_INFO "%s: D3 trace enabled\n", card->name);
capi_fill_MANUFACTURER_REQ(&cmdcmsg, global.ap.applid,
card->msgid++,
contr,
0x214D5641, /* ManuID */
0, /* Class */
1, /* Function */
(_cstruct)"\004\002\003\000\000");
}
send_message(card, &cmdcmsg);
}
static void send_listen(capidrv_contr *card)
{
capi_fill_LISTEN_REQ(&cmdcmsg, global.ap.applid,
card->msgid++,
card->contrnr, /* controller */
1 << 6, /* Infomask */
card->cipmask,
card->cipmask2,
NULL, NULL);
listen_change_state(card, EV_LISTEN_REQ);
send_message(card, &cmdcmsg);
}
static void listentimerfunc(unsigned long x)
{
capidrv_contr *card = (capidrv_contr *)x;
if (card->state != ST_LISTEN_NONE && card->state != ST_LISTEN_ACTIVE)
printk(KERN_ERR "%s: controller dead ??\n", card->name);
send_listen(card);
mod_timer(&card->listentimer, jiffies + 60*HZ);
}
static int capidrv_addcontr(u16 contr, struct capi_profile *profp)
{
capidrv_contr *card;
unsigned long flags;
isdn_ctrl cmd;
char id[20];
int i;
sprintf(id, "capidrv-%d", contr);
if (!try_module_get(THIS_MODULE)) {
printk(KERN_WARNING "capidrv: (%s) Could not reserve module\n", id);
return -1;
}
if (!(card = kzalloc(sizeof(capidrv_contr), GFP_ATOMIC))) {
printk(KERN_WARNING
"capidrv: (%s) Could not allocate contr-struct.\n", id);
return -1;
}
card->owner = THIS_MODULE;
init_timer(&card->listentimer);
strcpy(card->name, id);
card->contrnr = contr;
card->nbchan = profp->nbchannel;
card->bchans = kmalloc(sizeof(capidrv_bchan) * card->nbchan, GFP_ATOMIC);
if (!card->bchans) {
printk(KERN_WARNING
"capidrv: (%s) Could not allocate bchan-structs.\n", id);
module_put(card->owner);
kfree(card);
return -1;
}
card->interface.channels = profp->nbchannel;
card->interface.maxbufsize = 2048;
card->interface.command = if_command;
card->interface.writebuf_skb = if_sendbuf;
card->interface.writecmd = NULL;
card->interface.readstat = if_readstat;
card->interface.features = ISDN_FEATURE_L2_HDLC |
ISDN_FEATURE_L2_TRANS |
ISDN_FEATURE_L3_TRANS |
ISDN_FEATURE_P_UNKNOWN |
ISDN_FEATURE_L2_X75I |
ISDN_FEATURE_L2_X75UI |
ISDN_FEATURE_L2_X75BUI;
if (profp->support1 & (1<<2))
card->interface.features |= ISDN_FEATURE_L2_V11096 |
ISDN_FEATURE_L2_V11019 |
ISDN_FEATURE_L2_V11038;
if (profp->support1 & (1<<8))
card->interface.features |= ISDN_FEATURE_L2_MODEM;
card->interface.hl_hdrlen = 22; /* len of DATA_B3_REQ */
strncpy(card->interface.id, id, sizeof(card->interface.id) - 1);
card->q931_read = card->q931_buf;
card->q931_write = card->q931_buf;
card->q931_end = card->q931_buf + sizeof(card->q931_buf) - 1;
if (!register_isdn(&card->interface)) {
printk(KERN_ERR "capidrv: Unable to register contr %s\n", id);
kfree(card->bchans);
module_put(card->owner);
kfree(card);
return -1;
}
card->myid = card->interface.channels;
memset(card->bchans, 0, sizeof(capidrv_bchan) * card->nbchan);
for (i = 0; i < card->nbchan; i++) {
card->bchans[i].contr = card;
}
spin_lock_irqsave(&global_lock, flags);
card->next = global.contr_list;
global.contr_list = card;
global.ncontr++;
spin_unlock_irqrestore(&global_lock, flags);
cmd.command = ISDN_STAT_RUN;
cmd.driver = card->myid;
card->interface.statcallb(&cmd);
card->cipmask = 0x1FFF03FF; /* any */
card->cipmask2 = 0;
card->listentimer.data = (unsigned long)card;
card->listentimer.function = listentimerfunc;
send_listen(card);
mod_timer(&card->listentimer, jiffies + 60*HZ);
printk(KERN_INFO "%s: now up (%d B channels)\n",
card->name, card->nbchan);
enable_dchannel_trace(card);
return 0;
}
static int capidrv_delcontr(u16 contr)
{
capidrv_contr **pp, *card;
unsigned long flags;
isdn_ctrl cmd;
spin_lock_irqsave(&global_lock, flags);
for (card = global.contr_list; card; card = card->next) {
if (card->contrnr == contr)
break;
}
if (!card) {
spin_unlock_irqrestore(&global_lock, flags);
printk(KERN_ERR "capidrv: delcontr: no contr %u\n", contr);
return -1;
}
/* FIXME: maybe a race condition the card should be removed
* here from global list /kkeil
*/
spin_unlock_irqrestore(&global_lock, flags);
del_timer(&card->listentimer);
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: id=%d unloading\n",
card->contrnr, card->myid);
cmd.command = ISDN_STAT_STOP;
cmd.driver = card->myid;
card->interface.statcallb(&cmd);
while (card->nbchan) {
cmd.command = ISDN_STAT_DISCH;
cmd.driver = card->myid;
cmd.arg = card->nbchan-1;
cmd.parm.num[0] = 0;
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: id=%d disable chan=%ld\n",
card->contrnr, card->myid, cmd.arg);
card->interface.statcallb(&cmd);
if (card->bchans[card->nbchan-1].nccip)
free_ncci(card, card->bchans[card->nbchan-1].nccip);
if (card->bchans[card->nbchan-1].plcip)
free_plci(card, card->bchans[card->nbchan-1].plcip);
if (card->plci_list)
printk(KERN_ERR "capidrv: bug in free_plci()\n");
card->nbchan--;
}
kfree(card->bchans);
card->bchans = NULL;
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: id=%d isdn unload\n",
card->contrnr, card->myid);
cmd.command = ISDN_STAT_UNLOAD;
cmd.driver = card->myid;
card->interface.statcallb(&cmd);
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: id=%d remove contr from list\n",
card->contrnr, card->myid);
spin_lock_irqsave(&global_lock, flags);
for (pp = &global.contr_list; *pp; pp = &(*pp)->next) {
if (*pp == card) {
*pp = (*pp)->next;
card->next = NULL;
global.ncontr--;
break;
}
}
spin_unlock_irqrestore(&global_lock, flags);
module_put(card->owner);
printk(KERN_INFO "%s: now down.\n", card->name);
kfree(card);
return 0;
}
static int
lower_callback(struct notifier_block *nb, unsigned long val, void *v)
{
capi_profile profile;
u32 contr = (long)v;
switch (val) {
case CAPICTR_UP:
printk(KERN_INFO "capidrv: controller %hu up\n", contr);
if (capi20_get_profile(contr, &profile) == CAPI_NOERROR)
(void) capidrv_addcontr(contr, &profile);
break;
case CAPICTR_DOWN:
printk(KERN_INFO "capidrv: controller %hu down\n", contr);
(void) capidrv_delcontr(contr);
break;
}
return NOTIFY_OK;
}
/*
* /proc/capi/capidrv:
* nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
*/
static int capidrv_proc_show(struct seq_file *m, void *v)
{
seq_printf(m, "%lu %lu %lu %lu\n",
global.ap.nrecvctlpkt,
global.ap.nrecvdatapkt,
global.ap.nsentctlpkt,
global.ap.nsentdatapkt);
return 0;
}
static int capidrv_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, capidrv_proc_show, NULL);
}
static const struct file_operations capidrv_proc_fops = {
.owner = THIS_MODULE,
.open = capidrv_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static void __init proc_init(void)
{
proc_create("capi/capidrv", 0, NULL, &capidrv_proc_fops);
}
static void __exit proc_exit(void)
{
remove_proc_entry("capi/capidrv", NULL);
}
static struct notifier_block capictr_nb = {
.notifier_call = lower_callback,
};
static int __init capidrv_init(void)
{
capi_profile profile;
u32 ncontr, contr;
u16 errcode;
global.ap.rparam.level3cnt = -2; /* number of bchannels twice */
global.ap.rparam.datablkcnt = 16;
global.ap.rparam.datablklen = 2048;
global.ap.recv_message = capidrv_recv_message;
errcode = capi20_register(&global.ap);
if (errcode) {
return -EIO;
}
register_capictr_notifier(&capictr_nb);
errcode = capi20_get_profile(0, &profile);
if (errcode != CAPI_NOERROR) {
capi20_release(&global.ap);
return -EIO;
}
ncontr = profile.ncontroller;
for (contr = 1; contr <= ncontr; contr++) {
errcode = capi20_get_profile(contr, &profile);
if (errcode != CAPI_NOERROR)
continue;
(void) capidrv_addcontr(contr, &profile);
}
proc_init();
return 0;
}
static void __exit capidrv_exit(void)
{
unregister_capictr_notifier(&capictr_nb);
capi20_release(&global.ap);
proc_exit();
}
module_init(capidrv_init);
module_exit(capidrv_exit);
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