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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [isdn/] [avmb1/] [capidrv.c] - Blame information for rev 1765

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/* $Id: capidrv.c,v 1.1.1.1 2004-04-15 02:04:10 phoenix 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/sched.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/capi.h>
#include <linux/kernelcapi.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <asm/segment.h>
 
#include "capiutil.h"
#include "capicmd.h"
#include "capidrv.h"
 
static char *revision = "$Revision: 1.1.1.1 $";
static int debugmode = 0;
 
MODULE_DESCRIPTION("CAPI4Linux: Interface to ISDN4Linux");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");
MODULE_PARM(debugmode, "i");
 
/* -------- type definitions ----------------------------------------- */
 
 
struct capidrv_contr {
 
        struct capidrv_contr *next;
 
        __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;
                                spinlock_t lock;
                                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 {
        __u16 appid;
        int ncontr;
        struct capidrv_contr *contr_list;
 
        /* statistic */
        unsigned long nrecvctlpkt;
        unsigned long nrecvdatapkt;
        unsigned long nsentctlpkt;
        unsigned long nsentdatapkt;
};
 
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 spinlock_t global_lock = SPIN_LOCK_UNLOCKED;
static struct capi_interface *capifuncs;
 
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 0;
        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 = (capidrv_plci *) kmalloc(sizeof(capidrv_plci), GFP_ATOMIC);
 
        if (plcip == 0)
                return 0;
 
        memset(plcip, 0, sizeof(capidrv_plci));
        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 0;
}
 
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 0;
}
 
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 0;
}
 
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 = 0;
                        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 = (capidrv_ncci *) kmalloc(sizeof(capidrv_ncci), GFP_ATOMIC);
 
        if (nccip == 0)
                return 0;
 
        memset(nccip, 0, sizeof(capidrv_ncci));
        nccip->ncci = ncci;
        nccip->state = ST_NCCI_NONE;
        nccip->plcip = plcip;
        nccip->chan = plcip->chan;
        nccip->datahandle = 0;
        nccip->lock = SPIN_LOCK_UNLOCKED;
 
        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)) == 0)
                return 0;
 
        for (p = plcip->ncci_list; p; p = p->next)
                if (p->ncci == ncci)
                        return p;
        return 0;
}
 
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)) == 0)
                return 0;
 
        for (p = plcip->ncci_list; p; p = p->next)
                if (p->msgid == msgid)
                        return p;
        return 0;
}
 
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 = 0;
        kfree(nccip);
}
 
static int capidrv_add_ack(struct capidrv_ncci *nccip,
                           __u16 datahandle, int len)
{
        struct ncci_datahandle_queue *n, **pp;
        unsigned long flags;
 
        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 = 0;
        n->datahandle = datahandle;
        n->len = len;
        spin_lock_irqsave(&nccip->lock, flags);
        for (pp = &nccip->ackqueue; *pp; pp = &(*pp)->next) ;
        *pp = n;
        spin_unlock_irqrestore(&nccip->lock, flags);
        return 0;
}
 
static int capidrv_del_ack(struct capidrv_ncci *nccip, __u16 datahandle)
{
        struct ncci_datahandle_queue **pp, *p;
        unsigned long flags;
        int len;
 
        spin_lock_irqsave(&nccip->lock, flags);
        for (pp = &nccip->ackqueue; *pp; pp = &(*pp)->next) {
                if ((*pp)->datahandle == datahandle) {
                        p = *pp;
                        len = p->len;
                        *pp = (*pp)->next;
                        spin_unlock_irqrestore(&nccip->lock, flags);
                        kfree(p);
                        return len;
                }
        }
        spin_unlock_irqrestore(&nccip->lock, flags);
        return -1;
}
 
/* -------- convert and send capi message ---------------------------- */
 
static void send_message(capidrv_contr * card, _cmsg * cmsg)
{
        struct sk_buff  *skb;
        size_t          len;
        u16             err;
 
        capi_cmsg2message(cmsg, cmsg->buf);
        len = CAPIMSG_LEN(cmsg->buf);
        skb = alloc_skb(len, GFP_ATOMIC);
        if(!skb) {
                printk(KERN_ERR "no skb len(%d) memory\n", len);
                return;
        }
        memcpy(skb_put(skb, len), cmsg->buf, len);
        err = (*capifuncs->capi_put_message) (global.appid, skb);
        if (err) {
                printk(KERN_WARNING "%s: capi_put_message error: %04x\n",
                        __FUNCTION__, err);
                kfree_skb(skb);
                return;
        }
        global.nsentctlpkt++;
}
 
/* -------- 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 = 0;
        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, 0},
  {ST_PLCI_NONE, ST_PLCI_ALLOCATED, EV_PLCI_FACILITY_IND_UP, 0},
  {ST_PLCI_NONE, ST_PLCI_INCOMING, EV_PLCI_CONNECT_IND, 0},
  {ST_PLCI_NONE, ST_PLCI_RESUMEING, EV_PLCI_RESUME_REQ, 0},
  /* 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, 0},
  /* P-1 */
  {ST_PLCI_ALLOCATED, ST_PLCI_ACTIVE, EV_PLCI_CONNECT_ACTIVE_IND, 0},
  {ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, 0},
  {ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, 0},
  {ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, 0},
  /* P-ACT */
  {ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, 0},
  {ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, 0},
  {ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, 0},
  {ST_PLCI_ACTIVE, ST_PLCI_HELD, EV_PLCI_HOLD_IND, 0},
  {ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_SUSPEND_IND, 0},
  /* P-2 */
  {ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_CONNECT_REJECT, 0},
  {ST_PLCI_INCOMING, ST_PLCI_FACILITY_IND, EV_PLCI_FACILITY_IND_UP, 0},
  {ST_PLCI_INCOMING, ST_PLCI_ACCEPTING, EV_PLCI_CONNECT_RESP, 0},
  {ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, 0},
  {ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, 0},
  {ST_PLCI_INCOMING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, 0},
  {ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_CD_IND, 0},
  /* P-3 */
  {ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_CONNECT_REJECT, 0},
  {ST_PLCI_FACILITY_IND, ST_PLCI_ACCEPTING, EV_PLCI_CONNECT_ACTIVE_IND, 0},
  {ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, 0},
  {ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, 0},
  {ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, 0},
  /* P-4 */
  {ST_PLCI_ACCEPTING, ST_PLCI_ACTIVE, EV_PLCI_CONNECT_ACTIVE_IND, 0},
  {ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, 0},
  {ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, 0},
  {ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, 0},
  /* P-5 */
  {ST_PLCI_DISCONNECTING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, 0},
  /* 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, 0},
  /* P-RES */
  {ST_PLCI_RESUME, ST_PLCI_ACTIVE, EV_PLCI_RESUME_IND, 0},
  /* P-HELD */
  {ST_PLCI_HELD, ST_PLCI_ACTIVE, EV_PLCI_RETRIEVE_IND, 0},
  {},
};
 
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.appid,
                                 card->msgid++,
                                 ncci->plcip->plci,
                                 0,      /* BChannelinformation */
                                 0,      /* Keypadfacility */
                                 0,      /* Useruserdata */   /* $$$$ */
 
        );
        send_message(card, &cmsg);
        plci_change_state(card, ncci->plcip, EV_PLCI_DISCONNECT_REQ);
 
        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, 0},
  {ST_NCCI_NONE, ST_NCCI_INCOMING, EV_NCCI_CONNECT_B3_IND, 0},
  /* N-0.1 */
  {ST_NCCI_OUTGOING, ST_NCCI_ALLOCATED, EV_NCCI_CONNECT_B3_CONF_OK, 0},
  {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, 0},
  {ST_NCCI_INCOMING, ST_NCCI_ALLOCATED, EV_NCCI_CONNECT_B3_RESP, 0},
  {ST_NCCI_INCOMING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, 0},
  {ST_NCCI_INCOMING, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, 0},
  /* N-2 */
  {ST_NCCI_ALLOCATED, ST_NCCI_ACTIVE, EV_NCCI_CONNECT_B3_ACTIVE_IND, 0},
  {ST_NCCI_ALLOCATED, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, 0},
  {ST_NCCI_ALLOCATED, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, 0},
  /* N-ACT */
  {ST_NCCI_ACTIVE, ST_NCCI_ACTIVE, EV_NCCI_RESET_B3_IND, 0},
  {ST_NCCI_ACTIVE, ST_NCCI_RESETING, EV_NCCI_RESET_B3_REQ, 0},
  {ST_NCCI_ACTIVE, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, 0},
  {ST_NCCI_ACTIVE, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, 0},
  /* N-3 */
  {ST_NCCI_RESETING, ST_NCCI_ACTIVE, EV_NCCI_RESET_B3_IND, 0},
  {ST_NCCI_RESETING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, 0},
  {ST_NCCI_RESETING, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, 0},
  /* N-4 */
  {ST_NCCI_DISCONNECTING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, 0},
  {ST_NCCI_DISCONNECTING, ST_NCCI_PREVIOUS, EV_NCCI_DISCONNECT_B3_CONF_ERROR,0},
  /* 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 == 0) {
                        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 = 0;
                   switch (cmsg->Class) {
                      case 0: break;
                      case 1: s = "unknown class"; break;
                      case 2: s = "unknown function"; break;
                      default: s = "unkown 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)) == 0) {
                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 */
                send_message(card, cmsg);
                plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
                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.appid,
                                            card->msgid++,
                                            plcip->plci,        /* adr */
                                            0,   /* BChannelinformation */
                                            0,   /* Keypadfacility */
                                            0,   /* Useruserdata */
 
                        );
                        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 */
                send_message(card, cmsg);
                plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
                break;
 
        default:
                /* An error happened. (Invalid parameters for example.) */
                capi_cmsg_answer(cmsg);
                cmsg->Reject = 8;       /* reject call,
                                           destination out of order */
                send_message(card, cmsg);
                plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
                break;
        }
        return;
}
 
static void handle_plci(_cmsg * cmsg)
{
        capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
        capidrv_plci *plcip;
        isdn_ctrl cmd;
 
        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);
                send_message(card, cmsg);
                plci_change_state(card, plcip, EV_PLCI_DISCONNECT_RESP);
                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);
                        send_message(card, cmsg);
                        plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND);
                } 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.appid,
                                                 card->msgid++,
                                                 plcip->plci,   /* adr */
 
                        );
                        nccip->msgid = cmsg->Messagenumber;
                        send_message(card, cmsg);
                        cmd.command = ISDN_STAT_DCONN;
                        cmd.driver = card->myid;
                        cmd.arg = plcip->chan;
                        card->interface.statcallb(&cmd);
                        plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND);
                        ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_REQ);
                }
                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;
                        }
                }
                printk(KERN_ERR "capidrv-%d: %s\n",
                                card->contrnr, capi_cmsg2str(cmsg));
                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);
                send_message(card, cmsg);
                ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_ACTIVE_IND);
 
                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.appid,
                                                          card->msgid++,
                                                          nccip->ncci,  /* adr */
                                                          0,     /* Reject */
 
                                );
                                send_message(card, cmsg);
                                ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_RESP);
                                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.appid,
                                          card->msgid++,
                                          cmsg->adr.adrNCCI,
                                          2,    /* Reject */
 
                );
                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 (!(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);
                send_message(card, cmsg);
                ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_RESP);
                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_signal(__u16 applid, void *dummy)
{
        struct sk_buff *skb = 0;
 
        while ((*capifuncs->capi_get_message) (global.appid, &skb) == CAPI_NOERROR) {
                capi_message2cmsg(&s_cmsg, skb->data);
                if (debugmode > 2)
                        printk(KERN_DEBUG "capidrv_signal: applid=%d %s\n",
                                        applid, capi_cmsg2str(&s_cmsg));
 
                if (s_cmsg.Command == CAPI_DATA_B3
                    && s_cmsg.Subcommand == CAPI_IND) {
                        handle_data(&s_cmsg, skb);
                        global.nrecvdatapkt++;
                        continue;
                }
                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);
                global.nrecvctlpkt++;
        }
}
 
/* ------------------------------------------------------------------- */
 
#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: illegal 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.appid,
                                              card->msgid++,
                                              card->contrnr,    /* adr */
                                          si2cip(bchan->si1, bchan->si2),       /* cipvalue */
                                              called,   /* CalledPartyNumber */
                                              calling,  /* CallingPartyNumber */
                                              0, /* CalledPartySubaddress */
                                              0, /* 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 */
                                              0, /* B2configuration */
                                              0, /* B3configuration */
                                              0, /* BC */
                                              0, /* LLC */
                                              0, /* HLC */
                                              /* BChannelinformation */
                                              isleasedline ? AdditionalInfo : 0,
                                              0, /* Keypadfacility */
                                              0, /* Useruserdata */
 
                            );
                        if ((plcip = new_plci(card, (c->arg % card->nbchan))) == 0) {
                                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.appid,
                                       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 */
                                       0,        /* B2configuration */
                                       0,        /* B3configuration */
                                       0,        /* ConnectedNumber */
                                       0,        /* ConnectedSubaddress */
                                       0,        /* LLC */
                                       0,        /* BChannelinformation */
                                       0,        /* Keypadfacility */
                                       0,        /* Useruserdata */
 
                );
                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.appid,
                                                    card->msgid++,
                                                    bchan->nccip->ncci,
 
                        );
                        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.appid,
                                                         card->msgid++,
                                                      bchan->plcip->plci,
                                                         0,      /* BChannelinformation */
                                                         0,      /* Keypadfacility */
                                                         0,      /* Useruserdata */
 
                                );
                                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;
 
        case ISDN_CMD_LOCK:
                if (debugmode > 1)
                        printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_LOCK (%ld)\n", card->contrnr, c->arg);
                MOD_INC_USE_COUNT;
                break;
 
        case ISDN_CMD_UNLOCK:
                if (debugmode > 1)
                        printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_UNLOCK (%ld)\n",
                                        card->contrnr, c->arg);
                MOD_DEC_USE_COUNT;
                break;
 
/* never called */
        case ISDN_CMD_GETL2:
                if (debugmode)
                        printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_GETL2\n",
                                        card->contrnr);
                return -ENODEV;
        case ISDN_CMD_GETL3:
                if (debugmode)
                        printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_GETL3\n",
                                        card->contrnr);
                return -ENODEV;
        case ISDN_CMD_GETEAZ:
                if (debugmode)
                        printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_GETEAZ\n",
                                        card->contrnr);
                return -ENODEV;
        case ISDN_CMD_SETSIL:
                if (debugmode)
                        printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_SETSIL\n",
                                        card->contrnr);
                return -ENODEV;
        case ISDN_CMD_GETSIL:
                if (debugmode)
                        printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_GETSIL\n",
                                        card->contrnr);
                return -ENODEV;
        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;
        size_t msglen;
        __u16 errcode;
        __u16 datahandle;
 
        if (!card) {
                printk(KERN_ERR "capidrv: if_sendbuf called with invalid driverId %d!\n",
                       id);
                return 0;
        }
        if (debugmode > 1)
                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;
        capi_fill_DATA_B3_REQ(&sendcmsg, global.appid, card->msgid++,
                              nccip->ncci,      /* adr */
                              (__u32) skb->data,        /* Data */
                              skb->len,         /* DataLength */
                              datahandle,       /* DataHandle */
 
            );
 
        if (capidrv_add_ack(nccip, datahandle, doack ? 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 = (*capifuncs->capi_put_message) (global.appid, nskb);
                if (errcode == CAPI_NOERROR) {
                        dev_kfree_skb(skb);
                        nccip->datahandle++;
                        global.nsentdatapkt++;
                        return len;
                }
                (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 = (*capifuncs->capi_put_message) (global.appid, skb);
                if (errcode == CAPI_NOERROR) {
                        nccip->datahandle++;
                        global.nsentdatapkt++;
                        return len;
                }
                skb_pull(skb, msglen);
                (void)capidrv_del_ack(nccip, datahandle);
                return errcode == CAPI_SENDQUEUEFULL ? 0 : -1;
        }
}
 
static int if_readstat(__u8 *buf, int len, int user, int id, int channel)
{
        capidrv_contr *card = findcontrbydriverid(id);
        int count;
        __u8 *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 (user)
                        put_user(*card->q931_read++, p);
                else
                        *p = *card->q931_read++;
                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 = (*capifuncs->capi_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") == 0) {
           printk(KERN_ERR "%s: not from AVM, no d-channel trace possible (%s)\n",
                        card->name, manufacturer);
           return;
        }
        errcode = (*capifuncs->capi_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.appid,
                                           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.appid,
                                           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.appid,
                             card->msgid++,
                             card->contrnr, /* controller */
                             1 << 6,    /* Infomask */
                             card->cipmask,
                             card->cipmask2,
                             0, 0);
        send_message(card, &cmdcmsg);
        listen_change_state(card, EV_LISTEN_REQ);
}
 
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;
        long flags;
        isdn_ctrl cmd;
        char id[20];
        int i;
 
        MOD_INC_USE_COUNT;
 
        sprintf(id, "capidrv-%d", contr);
        if (!(card = (capidrv_contr *) kmalloc(sizeof(capidrv_contr), GFP_ATOMIC))) {
                printk(KERN_WARNING
                 "capidrv: (%s) Could not allocate contr-struct.\n", id);
                MOD_DEC_USE_COUNT;
                return -1;
        }
        memset(card, 0, sizeof(capidrv_contr));
        init_timer(&card->listentimer);
        strcpy(card->name, id);
        card->contrnr = contr;
        card->nbchan = profp->nbchannel;
        card->bchans = (capidrv_bchan *) kmalloc(sizeof(capidrv_bchan) * card->nbchan, GFP_ATOMIC);
        if (!card->bchans) {
                printk(KERN_WARNING
                "capidrv: (%s) Could not allocate bchan-structs.\n", id);
                kfree(card);
                MOD_DEC_USE_COUNT;
                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 = 0;
        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);
                kfree(card);
                MOD_DEC_USE_COUNT;
                return -1;
        }
        card->myid = card->interface.channels;
 
        spin_lock_irqsave(&global_lock, flags);
        card->next = global.contr_list;
        global.contr_list = card;
        global.ncontr++;
        spin_unlock_irqrestore(&global_lock, flags);
 
        memset(card->bchans, 0, sizeof(capidrv_bchan) * card->nbchan);
        for (i = 0; i < card->nbchan; i++) {
                card->bchans[i].contr = card;
        }
 
        cmd.command = ISDN_STAT_RUN;
        cmd.driver = card->myid;
        card->interface.statcallb(&cmd);
 
        card->cipmask = 0x1FFF03FF;     /* any */
        card->cipmask2 = 0;
 
        send_listen(card);
 
        card->listentimer.data = (unsigned long)card;
        card->listentimer.function = listentimerfunc;
        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;
        }
        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);
                card->nbchan--;
        }
        if (card->plci_list)
                printk(KERN_ERR "capidrv: bug in free_plci()\n");
        kfree(card->bchans);
        card->bchans = 0;
 
        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 = 0;
                        global.ncontr--;
                        break;
                }
        }
        spin_unlock_irqrestore(&global_lock, flags);
 
        printk(KERN_INFO "%s: now down.\n", card->name);
 
        kfree(card);
 
        MOD_DEC_USE_COUNT;
 
        return 0;
}
 
 
static void lower_callback(unsigned int cmd, __u32 contr, void *data)
{
 
        switch (cmd) {
        case KCI_CONTRUP:
                printk(KERN_INFO "capidrv: controller %hu up\n", contr);
                (void) capidrv_addcontr(contr, (capi_profile *) data);
                break;
        case KCI_CONTRDOWN:
                printk(KERN_INFO "capidrv: controller %hu down\n", contr);
                (void) capidrv_delcontr(contr);
                break;
        }
}
 
/*
 * /proc/capi/capidrv:
 * nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
 */
static int proc_capidrv_read_proc(char *page, char **start, off_t off,
                                       int count, int *eof, void *data)
{
        int len = 0;
 
        len += sprintf(page+len, "%lu %lu %lu %lu\n",
                        global.nrecvctlpkt,
                        global.nrecvdatapkt,
                        global.nsentctlpkt,
                        global.nsentdatapkt);
        if (off+count >= len)
           *eof = 1;
        if (len < off)
           return 0;
        *start = page + off;
        return ((count < len-off) ? count : len-off);
}
 
static struct procfsentries {
  char *name;
  mode_t mode;
  int (*read_proc)(char *page, char **start, off_t off,
                                       int count, int *eof, void *data);
  struct proc_dir_entry *procent;
} procfsentries[] = {
   /* { "capi",           S_IFDIR, 0 }, */
   { "capi/capidrv",      0       , proc_capidrv_read_proc },
};
 
static void __init proc_init(void)
{
    int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
    int i;
 
    for (i=0; i < nelem; i++) {
        struct procfsentries *p = procfsentries + i;
        p->procent = create_proc_entry(p->name, p->mode, 0);
        if (p->procent) p->procent->read_proc = p->read_proc;
    }
}
 
static void __exit proc_exit(void)
{
    int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
    int i;
 
    for (i=nelem-1; i >= 0; i--) {
        struct procfsentries *p = procfsentries + i;
        if (p->procent) {
           remove_proc_entry(p->name, 0);
           p->procent = 0;
        }
    }
}
 
static struct capi_interface_user cuser = {
        name: "capidrv",
        callback: lower_callback
};
 
static int __init capidrv_init(void)
{
        struct capi_register_params rparam;
        capi_profile profile;
        char rev[32];
        char *p;
        __u32 ncontr, contr;
        __u16 errcode;
 
        MOD_INC_USE_COUNT;
 
        capifuncs = attach_capi_interface(&cuser);
 
        if (!capifuncs) {
                MOD_DEC_USE_COUNT;
                return -EIO;
        }
 
        if ((p = strchr(revision, ':')) != 0 && p[1]) {
                strncpy(rev, p + 2, sizeof(rev));
                rev[sizeof(rev)-1] = 0;
                if ((p = strchr(rev, '$')) != 0 && p > rev)
                   *(p-1) = 0;
        } else
                strcpy(rev, "1.0");
 
        rparam.level3cnt = -2;  /* number of bchannels twice */
        rparam.datablkcnt = 16;
        rparam.datablklen = 2048;
        errcode = (*capifuncs->capi_register) (&rparam, &global.appid);
        if (errcode) {
                detach_capi_interface(&cuser);
                MOD_DEC_USE_COUNT;
                return -EIO;
        }
 
        errcode = (*capifuncs->capi_get_profile) (0, &profile);
        if (errcode != CAPI_NOERROR) {
                (void) (*capifuncs->capi_release) (global.appid);
                detach_capi_interface(&cuser);
                MOD_DEC_USE_COUNT;
                return -EIO;
        }
 
        (void) (*capifuncs->capi_set_signal) (global.appid, capidrv_signal, 0);
 
        ncontr = profile.ncontroller;
        for (contr = 1; contr <= ncontr; contr++) {
                errcode = (*capifuncs->capi_get_profile) (contr, &profile);
                if (errcode != CAPI_NOERROR)
                        continue;
                (void) capidrv_addcontr(contr, &profile);
        }
        proc_init();
 
        printk(KERN_NOTICE "capidrv: Rev %s: loaded\n", rev);
        MOD_DEC_USE_COUNT;
 
        return 0;
}
 
static void __exit capidrv_exit(void)
{
        char rev[10];
        char *p;
 
        if ((p = strchr(revision, ':')) != 0) {
                strcpy(rev, p + 1);
                p = strchr(rev, '$');
                *p = 0;
        } else {
                strcpy(rev, " ??? ");
        }
 
        (void) (*capifuncs->capi_release) (global.appid);
 
        detach_capi_interface(&cuser);
 
        proc_exit();
 
        printk(KERN_NOTICE "capidrv: Rev%s: unloaded\n", rev);
}
 
module_init(capidrv_init);
module_exit(capidrv_exit);
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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [isdn/] [avmb1/] [capidrv.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1275	phoenix	`/* $Id: capidrv.c,v 1.1.1.1 2004-04-15 02:04:10 phoenix Exp $`
2			`*`
3			`* ISDN4Linux Driver, using capi20 interface (kernelcapi)`
4			`*`
5			`* Copyright 1997 by Carsten Paeth <calle@calle.de>`
6			`*`
7			`* This software may be used and distributed according to the terms`
8			`* of the GNU General Public License, incorporated herein by reference.`
9			`*`
10			`*/`
11
12			`#include <linux/module.h>`
13			`#include <linux/errno.h>`
14			`#include <linux/kernel.h>`
15			`#include <linux/major.h>`
16			`#include <linux/sched.h>`
17			`#include <linux/slab.h>`
18			`#include <linux/fcntl.h>`
19			`#include <linux/fs.h>`
20			`#include <linux/signal.h>`
21			`#include <linux/mm.h>`
22			`#include <linux/timer.h>`
23			`#include <linux/wait.h>`
24			`#include <linux/skbuff.h>`
25			`#include <linux/isdn.h>`
26			`#include <linux/isdnif.h>`
27			`#include <linux/proc_fs.h>`
28			`#include <linux/capi.h>`
29			`#include <linux/kernelcapi.h>`
30			`#include <linux/ctype.h>`
31			`#include <linux/init.h>`
32			`#include <asm/segment.h>`
33
34			`#include "capiutil.h"`
35			`#include "capicmd.h"`
36			`#include "capidrv.h"`
37
38			`static char *revision = "$Revision: 1.1.1.1 $";`
39			`static int debugmode = 0;`
40