divasfunc.c

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/* $Id: divasfunc.c,v 1.23.4.2 2004/08/28 20:03:53 armin Exp $
 *
 * Low level driver for Eicon DIVA Server ISDN cards.
 *
 * Copyright 2000-2003 by Armin Schindler ([email protected])
 * Copyright 2000-2003 Cytronics & Melware ([email protected])
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 */

#include "platform.h"
#include "di_defs.h"
#include "pc.h"
#include "di.h"
#include "io.h"
#include "divasync.h"
#include "diva.h"
#include "xdi_vers.h"

#define DBG_MINIMUM  (DL_LOG + DL_FTL + DL_ERR)
#define DBG_DEFAULT  (DBG_MINIMUM + DL_XLOG + DL_REG)

static int debugmask;

extern void DIVA_DIDD_Read(void *, int);

extern PISDN_ADAPTER IoAdapters[MAX_ADAPTER];

extern char *DRIVERRELEASE_DIVAS;

static dword notify_handle;
static DESCRIPTOR DAdapter;
static DESCRIPTOR MAdapter;

/* --------------------------------------------------------------------------
   MAINT driver connector section
   -------------------------------------------------------------------------- */
static void no_printf(unsigned char *x, ...)
{
    /* dummy debug function */
}

#include "debuglib.c"

/*
 * get the adapters serial number
 */
void diva_get_vserial_number(PISDN_ADAPTER IoAdapter, char *buf)
{
    int contr = 0;

    if ((contr = ((IoAdapter->serialNo & 0xff000000) >> 24))) {
        sprintf(buf, "%d-%d",
            IoAdapter->serialNo & 0x00ffffff, contr + 1);
    } else {
        sprintf(buf, "%d", IoAdapter->serialNo);
    }
}

/*
 * register a new adapter
 */
void diva_xdi_didd_register_adapter(int card)
{
    DESCRIPTOR d;
    IDI_SYNC_REQ req;

    if (card && ((card - 1) < MAX_ADAPTER) &&
        IoAdapters[card - 1] && Requests[card - 1]) {
        d.type = IoAdapters[card - 1]->Properties.DescType;
        d.request = Requests[card - 1];
        d.channels = IoAdapters[card - 1]->Properties.Channels;
        d.features = IoAdapters[card - 1]->Properties.Features;
        DBG_TRC(("DIDD register A(%d) channels=%d", card,
             d.channels))
            /* workaround for different Name in structure */
            strlcpy(IoAdapters[card - 1]->Name,
                IoAdapters[card - 1]->Properties.Name,
                sizeof(IoAdapters[card - 1]->Name));
        req.didd_remove_adapter.e.Req = 0;
        req.didd_add_adapter.e.Rc = IDI_SYNC_REQ_DIDD_ADD_ADAPTER;
        req.didd_add_adapter.info.descriptor = (void *) &d;
        DAdapter.request((ENTITY *)&req);
        if (req.didd_add_adapter.e.Rc != 0xff) {
            DBG_ERR(("DIDD register A(%d) failed !", card))
                }
        IoAdapters[card - 1]->os_trap_nfy_Fnc = NULL;
    }
}

/*
 * remove an adapter
 */
void diva_xdi_didd_remove_adapter(int card)
{
    IDI_SYNC_REQ req;
    ADAPTER *a = &IoAdapters[card - 1]->a;

    IoAdapters[card - 1]->os_trap_nfy_Fnc = NULL;
    DBG_TRC(("DIDD de-register A(%d)", card))
        req.didd_remove_adapter.e.Req = 0;
    req.didd_remove_adapter.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER;
    req.didd_remove_adapter.info.p_request =
        (IDI_CALL) Requests[card - 1];
    DAdapter.request((ENTITY *)&req);
    memset(&(a->IdTable), 0x00, 256);
}

/*
 * start debug
 */
static void start_dbg(void)
{
    DbgRegister("DIVAS", DRIVERRELEASE_DIVAS, (debugmask) ? debugmask : DBG_DEFAULT);
    DBG_LOG(("DIVA ISDNXDI BUILD (%s[%s])",
         DIVA_BUILD, diva_xdi_common_code_build))
        }

/*
 * stop debug
 */
static void stop_dbg(void)
{
    DbgDeregister();
    memset(&MAdapter, 0, sizeof(MAdapter));
    dprintf = no_printf;
}

/*
 * didd callback function
 */
static void *didd_callback(void *context, DESCRIPTOR *adapter,
               int removal)
{
    if (adapter->type == IDI_DADAPTER) {
        DBG_ERR(("Notification about IDI_DADAPTER change ! Oops."));
        return (NULL);
    }

    if (adapter->type == IDI_DIMAINT) {
        if (removal) {
            stop_dbg();
        } else {
            memcpy(&MAdapter, adapter, sizeof(MAdapter));
            dprintf = (DIVA_DI_PRINTF) MAdapter.request;
            start_dbg();
        }
    }
    return (NULL);
}

/*
 * connect to didd
 */
static int __init connect_didd(void)
{
    int x = 0;
    int dadapter = 0;
    IDI_SYNC_REQ req;
    DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];

    DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));

    for (x = 0; x < MAX_DESCRIPTORS; x++) {
        if (DIDD_Table[x].type == IDI_DADAPTER) {   /* DADAPTER found */
            dadapter = 1;
            memcpy(&DAdapter, &DIDD_Table[x], sizeof(DAdapter));
            req.didd_notify.e.Req = 0;
            req.didd_notify.e.Rc =
                IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY;
            req.didd_notify.info.callback = (void *)didd_callback;
            req.didd_notify.info.context = NULL;
            DAdapter.request((ENTITY *)&req);
            if (req.didd_notify.e.Rc != 0xff) {
                stop_dbg();
                return (0);
            }
            notify_handle = req.didd_notify.info.handle;
        } else if (DIDD_Table[x].type == IDI_DIMAINT) { /* MAINT found */
            memcpy(&MAdapter, &DIDD_Table[x], sizeof(DAdapter));
            dprintf = (DIVA_DI_PRINTF) MAdapter.request;
            start_dbg();
        }
    }

    if (!dadapter) {
        stop_dbg();
    }

    return (dadapter);
}

/*
 * disconnect from didd
 */
static void disconnect_didd(void)
{
    IDI_SYNC_REQ req;

    stop_dbg();

    req.didd_notify.e.Req = 0;
    req.didd_notify.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY;
    req.didd_notify.info.handle = notify_handle;
    DAdapter.request((ENTITY *)&req);
}

/*
 * init
 */
int __init divasfunc_init(int dbgmask)
{
    char *version;

    debugmask = dbgmask;

    if (!connect_didd()) {
        DBG_ERR(("divasfunc: failed to connect to DIDD."))
            return (0);
    }

    version = diva_xdi_common_code_build;

    divasa_xdi_driver_entry();

    return (1);
}

/*
 * exit
 */
void divasfunc_exit(void)
{
    divasa_xdi_driver_unload();
    disconnect_didd();
}