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/*

 * Copyright (c) 2009 Lukas Mejdrech

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

/** @addtogroup dp8390

 *  @{

 */

/** @file

 */

#include <assert.h>

#include <ddi.h>

#include <errno.h>

#include <malloc.h>

//#include <stdio.h>

#include <ipc/ipc.h>

#include <ipc/services.h>

#include "../../err.h"

#include "../../messages.h"

#include "../../modules.h"

#include "../../structures/packet/packet_client.h"

#include "../../structures/measured_strings.h"

#include "../device.h"

#include "../netif.h"

#include "../netif_interface.h"

#include "dp8390.h"

#include "dp8390_drv.h"

#include "dp8390_module.h"

#include "dp8390_port.h"

#define NAME    "dp8390 network interface"

#define IPC_GET_DEVICE( call )          ( device_id_t ) IPC_GET_METHOD( * call )

#define IPC_GET_ISR( call )             ( int ) IPC_GET_ARG2( * call )

static irq_cmd_t    dp8390_cmds[] = {

    {   .cmd = CMD_PIO_READ_8,

        .addr = NULL,

        .dstarg = 2

    },

    {

        .cmd = CMD_PREDICATE,

        .value = 2,

        .srcarg = 2

    },

    {   .cmd = CMD_PIO_WRITE_8,

        .addr = NULL,

        .srcarg = 2

    },

    {

        .cmd = CMD_ACCEPT

    }

};

static irq_code_t   dp8390_code = {

    sizeof( dp8390_cmds ) / sizeof( irq_cmd_t ),

    dp8390_cmds

};

netif_globals_t netif_globals;

void    netif_print_name( void );

void    irq_handler( ipc_callid_t iid, ipc_call_t * call );

void    change_state( device_ref device, device_state_t state );

int specific_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){

    return ENOTSUP;

}

int get_device_stats( device_id_t device_id, device_stats_ref stats ){

    ERROR_DECLARE;

    device_ref      device;

    eth_stat_t *    de_stat;

    if( ! stats ) return EBADMEM;

    ERROR_PROPAGATE( find_device( device_id, & device ));

    de_stat = & (( dpeth_t * ) device->specific )->de_stat;

    null_device_stats( stats );

    stats->rx_errors = de_stat->ets_recvErr;

    stats->tx_errors = de_stat->ets_sendErr;

    stats->rx_crc_errors = de_stat->ets_CRCerr;

    stats->rx_frame_errors = de_stat->ets_frameAll;

    stats->rx_missed_errors = de_stat->ets_missedP;

    stats->rx_packets = de_stat->ets_packetR;

    stats->tx_packets = de_stat->ets_packetT;

    stats->collisions = de_stat->ets_collision;

    stats->tx_aborted_errors = de_stat->ets_transAb;

    stats->tx_carrier_errors = de_stat->ets_carrSense;

    stats->tx_heartbeat_errors = de_stat->ets_CDheartbeat;

    stats->tx_window_errors = de_stat->ets_OWC;

    return EOK;

}

void netif_print_name( void ){

    printf( NAME );

}

int get_addr_message( device_id_t device_id, measured_string_ref address ){

    ERROR_DECLARE;

    device_ref  device;

    if( ! address ) return EBADMEM;

    ERROR_PROPAGATE( find_device( device_id, & device ));

    address->value = ( char * ) ( & (( dpeth_t * ) device->specific )->de_address );

    address->length = CONVERT_SIZE( ether_addr_t, char, 1 );

    return EOK;

}

void irq_handler( ipc_callid_t iid, ipc_call_t * call )

{

//  int irq;

    device_ref  device;

    dpeth_t *   dep;

    printf( "\ndevice %d - irq %x", IPC_GET_DEVICE( call ), IPC_GET_ISR( call ));

    if( find_device( IPC_GET_DEVICE( call ), & device ) != EOK ) return;

    dep = ( dpeth_t * ) device->specific;

    printf( "\ndev %d, irq %x\n", device->device_id, IPC_GET_ISR( call ));

    if ( dep->de_mode != DEM_ENABLED)

//      continue;

        return;

    assert( dep->de_flags & DEF_ENABLED);

//  irq= dep.de_irq;

//  assert(irq >= 0 && irq < NR_IRQ_VECTORS);

//      if ( dep->de_int_pending || 1)

//      {

        dep->de_int_pending= 0;

        dp_check_ints( dep );

//      do_int(dep);

/*      r= sys_irqenable(&dep->de_hook);

        if (r != OK)

        {

            panic("DP8390",

            "unable enable interrupts", r);

        }

*///    }

}

int probe_auto_message( void ){

    return ENOTSUP;

}

int probe_message( device_id_t device_id, int irq, int io ){

    ERROR_DECLARE;

    device_ref  device;

    dpeth_t *   dep;

    printf( "\n" );

    device = ( device_ref ) malloc( sizeof( device_t ));

    if( ! device ) return ENOMEM;

    dep = ( dpeth_t * ) malloc( sizeof( dpeth_t ));

    if( ! dep ){

        free( device );

        return ENOMEM;

    }

    bzero( device, sizeof( device_t ));

    bzero( dep, sizeof( dpeth_t ));

    device->device_id = device_id;

    device->nil_phone = -1;

    device->specific = ( void * ) dep;

    device->state = NETIF_STOPPED;

    dep->parent = device;

    dep->de_irq = irq;

    dep->de_mode = DEM_DISABLED;

    //TODO address?

    if( ERROR_OCCURRED( pio_enable(( void * ) io, DP8390_IO_SIZE, ( void ** ) & dep->de_base_port ))

    || ERROR_OCCURRED( do_probe( dep ))){

        free( dep );

        free( device );

        return ERROR_CODE;

    }

    if( ERROR_OCCURRED( device_map_add( & netif_globals.device_map, device->device_id, device ))){

        free( dep );

        free( device );

        return ERROR_CODE;

    }

    return EOK;

}

int send_message( device_id_t device_id, packet_t packet ){

    ERROR_DECLARE;

    device_ref  device;

    dpeth_t *   dep;

    packet_t    next;

    ERROR_PROPAGATE( find_device( IPC_GET_DEVICE( call ), & device ));

    dep = ( dpeth_t * ) device->specific;

    // process packet queue

    do{

        next = pq_detach( packet );

        if( do_pwrite( dep, packet, FALSE ) != EBUSY ){

            netif_pq_release( packet_get_id( packet ));

        }

        packet = next;

    }while( packet );

    return EOK;

}

int start_message( device_id_t device_id ){

    ERROR_DECLARE;

    device_ref  device;

    dpeth_t *   dep;

    ERROR_PROPAGATE( find_device( device_id, & device ));

    if( device->state != NETIF_ACTIVE ){

        dep = ( dpeth_t * ) device->specific;

        dp8390_cmds[ 0 ].addr = ( void * ) ( uint32_t ) ( dep->de_dp8390_port + DP_ISR );

        dp8390_cmds[ 2 ].addr = dp8390_cmds[ 0 ].addr;

        ERROR_PROPAGATE( ipc_register_irq( dep->de_irq, device->device_id, device->device_id, & dp8390_code ));

        if( ERROR_OCCURRED( do_init( dep, DL_BROAD_REQ ))){

            ipc_unregister_irq( dep->de_irq, device->device_id );

            return ERROR_CODE;

        }

        change_state( device, NETIF_ACTIVE );

    }

    return EOK;

}

int stop_message( device_id_t device_id ){

    ERROR_DECLARE;

    device_ref  device;

    dpeth_t *   dep;

    ERROR_PROPAGATE( find_device( device_id, & device ));

    if( device->state != NETIF_STOPPED ){

        dep = ( dpeth_t * ) device->specific;

        do_stop( dep );

        ipc_unregister_irq( dep->de_irq, device->device_id );

        change_state( device, NETIF_STOPPED );

    }

    return EOK;

}

void change_state( device_ref device, device_state_t state ){

    device->state = state;

    nil_message( device, NET_NIL_DEVICE_STATE, device->state, NULL );

    printf( "\nState changed to %s", ( state == NETIF_ACTIVE ) ? "ACTIVE" : "STOPPED" );

}

int initialize( void ){

    ipcarg_t    phonehash;

    async_set_interrupt_received( irq_handler );

    return REGISTER_ME( SERVICE_DP8390, & phonehash );

}

int netif_send_packet( dpeth_t * dep, packet_t packet ){

    if( !( dep && dep->parent )) return EINVAL;

    nil_message(( device_ref ) dep->parent, NET_NIL_RECEIVED, packet_get_id( packet ), 0 );

    return EOK;

}

/** @}

 */