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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

 *  DP8390 network interface implementation.

 */

#include <assert.h>

#include <async.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 "../../include/device.h"

#include "../../include/nil_interface.h"

#include "../netif.h"

#include "../netif_module.h"

#include "dp8390.h"

#include "dp8390_drv.h"

#include "dp8390_port.h"

/** DP8390 module name.

 */

#define NAME	"dp8390 network interface"

/** Returns the device from the interrupt call.

 *  @param[in] call The interrupt call.

 */

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

/** Returns the interrupt status register from the interrupt call.

 *  @param[in] call The interrupt call.

 */

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

/** DP8390 kernel interrupt command sequence.

 */

static irq_cmd_t	dp8390_cmds[] = {

	{ 	.cmd = CMD_PIO_READ_8,

		.addr = NULL,

		.dstarg = 2

	},

	{

		.cmd = CMD_PREDICATE,

		.value = 1,

		.srcarg = 2

	},

	{

		.cmd = CMD_ACCEPT

	}

};

/** DP8390 kernel interrupt code.

 */

static irq_code_t	dp8390_code = {

	sizeof( dp8390_cmds ) / sizeof( irq_cmd_t ),

	dp8390_cmds

};

/** Network interface module global data.

 */

netif_globals_t netif_globals;

/** Prints the module name.

 *  @see NAME

 */

void	module_print_name( void );

/** Handles the interrupt messages.

 *  This is the interrupt handler callback function.

 *  @param[in] iid The interrupt message identifier.

 *  @param[in] call The interrupt message.

 */

void	irq_handler( ipc_callid_t iid, ipc_call_t * call );

/** Changes the network interface state.

 *  @param[in,out] device The network interface.

 *  @param[in] state The new state.

 *  @returns The new state.

 */

int	change_state( device_ref device, device_state_t state );

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

	return ENOTSUP;

}

int netif_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->receive_errors = de_stat->ets_recvErr;

	stats->send_errors = de_stat->ets_sendErr;

	stats->receive_crc_errors = de_stat->ets_CRCerr;

	stats->receive_frame_errors = de_stat->ets_frameAll;

	stats->receive_missed_errors = de_stat->ets_missedP;

	stats->receive_packets = de_stat->ets_packetR;

	stats->send_packets = de_stat->ets_packetT;

	stats->collisions = de_stat->ets_collision;

	stats->send_aborted_errors = de_stat->ets_transAb;

	stats->send_carrier_errors = de_stat->ets_carrSense;

	stats->send_heartbeat_errors = de_stat->ets_CDheartbeat;

	stats->send_window_errors = de_stat->ets_OWC;

	return EOK;

}

void module_print_name( void ){

	printf( "%s", NAME );

}

int netif_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 )

{

	device_ref	device;

	dpeth_t *	dep;

	packet_t	received;

	device_id_t	device_id;

	int			phone;

	device_id = IRQ_GET_DEVICE( call );

	fibril_rwlock_write_lock( & netif_globals.lock );

	if( find_device( device_id, & device ) != EOK ){

		fibril_rwlock_write_unlock( & netif_globals.lock );

		return;

	}

	dep = ( dpeth_t * ) device->specific;

	if ( dep->de_mode != DEM_ENABLED){

		fibril_rwlock_write_unlock( & netif_globals.lock );

		return;

	}

	assert( dep->de_flags & DEF_ENABLED);

	dep->de_int_pending = 0;

//	remove debug print:

//	printf( "I%d: 0x%x\n", device_id, IPC_GET_ISR( call ));

	dp_check_ints( dep, IPC_GET_ISR( call ));

	if( dep->received_queue ){

		received = dep->received_queue;

		phone = device->nil_phone;

		dep->received_queue = NULL;

		dep->received_count = 0;

		fibril_rwlock_write_unlock( & netif_globals.lock );

//	remove debug dump:

//	uint8_t *	data;

//	data = packet_get_data( received );

//	printf( "Receiving packet:\n\tid\t= %d\n\tlength\t= %d\n\tdata\t= %.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX\n\t\t%.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX\n", packet_get_id( received ), packet_get_data_length( received ), data[ 0 ], data[ 1 ], data[ 2 ], data[ 3 ], data[ 4 ], data[ 5 ], data[ 6 ], data[ 7 ], data[ 8 ], data[ 9 ], data[ 10 ], data[ 11 ], data[ 12 ], data[ 13 ], data[ 14 ], data[ 15 ], data[ 16 ], data[ 17 ], data[ 18 ], data[ 19 ], data[ 20 ], data[ 21 ], data[ 22 ], data[ 23 ], data[ 24 ], data[ 25 ], data[ 26 ], data[ 27 ], data[ 28 ], data[ 29 ], data[ 30 ], data[ 31 ], data[ 32 ], data[ 33 ], data[ 34 ], data[ 35 ], data[ 36 ], data[ 37 ], data[ 38 ], data[ 39 ], data[ 40 ], data[ 41 ], data[ 42 ], data[ 43 ], data[ 44 ], data[ 45 ], data[ 46 ], data[ 47 ], data[ 48 ], data[ 49 ], data[ 50 ], data[ 51 ], data[ 52 ], data[ 53 ], data[ 54 ], data[ 55 ], data[ 56 ], data[ 57 ], data[ 58 ], data[ 59 ] );

		nil_received_msg( phone, device_id, received, NULL );

	}else{

		fibril_rwlock_write_unlock( & netif_globals.lock );

	}

	ipc_answer_0( iid, EOK );

}

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

	ERROR_DECLARE;

	device_ref	device;

	dpeth_t *	dep;

	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->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 netif_send_message( device_id_t device_id, packet_t packet, services_t sender ){

	ERROR_DECLARE;

	device_ref	device;

	dpeth_t *	dep;

	packet_t	next;

	ERROR_PROPAGATE( find_device( device_id, & device ));

	if( device->state != NETIF_ACTIVE ){

		netif_pq_release( packet_get_id( packet ));

		return EFORWARD;

	}

	dep = ( dpeth_t * ) device->specific;

	// process packet queue

	do{

		next = pq_detach( packet );

//		remove debug dump:

//		uint8_t *	data;

//		data = packet_get_data( packet );

//		printf( "Sending packet:\n\tid\t= %d\n\tlength\t= %d\n\tdata\t= %.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX\n\t\t%.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX:%.2hhX %.2hhX %.2hhX %.2hhX\n", packet_get_id( packet ), packet_get_data_length( packet ), data[ 0 ], data[ 1 ], data[ 2 ], data[ 3 ], data[ 4 ], data[ 5 ], data[ 6 ], data[ 7 ], data[ 8 ], data[ 9 ], data[ 10 ], data[ 11 ], data[ 12 ], data[ 13 ], data[ 14 ], data[ 15 ], data[ 16 ], data[ 17 ], data[ 18 ], data[ 19 ], data[ 20 ], data[ 21 ], data[ 22 ], data[ 23 ], data[ 24 ], data[ 25 ], data[ 26 ], data[ 27 ], data[ 28 ], data[ 29 ], data[ 30 ], data[ 31 ], data[ 32 ], data[ 33 ], data[ 34 ], data[ 35 ], data[ 36 ], data[ 37 ], data[ 38 ], data[ 39 ], data[ 40 ], data[ 41 ], data[ 42 ], data[ 43 ], data[ 44 ], data[ 45 ], data[ 46 ], data[ 47 ], data[ 48 ], data[ 49 ], data[ 50 ], data[ 51 ], data[ 52 ], data[ 53 ], data[ 54 ], data[ 55 ], data[ 56 ], data[ 57 ], data[ 58 ], data[ 59 ] );

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

			netif_pq_release( packet_get_id( packet ));

		}

		packet = next;

	}while( packet );

	return EOK;

}

int	netif_start_message( device_ref device ){

	ERROR_DECLARE;

	dpeth_t *	dep;

	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;

		}

		return change_state( device, NETIF_ACTIVE );

	}

	return EOK;

}

int	netif_stop_message( device_ref device ){

	dpeth_t *	dep;

	if( device->state != NETIF_STOPPED ){

		dep = ( dpeth_t * ) device->specific;

		do_stop( dep );

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

		return change_state( device, NETIF_STOPPED );

	}

	return EOK;

}

int change_state( device_ref device, device_state_t state ){

	device->state = state;

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

	return state;

}

int netif_initialize( void ){

	ipcarg_t	phonehash;

	async_set_interrupt_received( irq_handler );

	return REGISTER_ME( SERVICE_DP8390, & phonehash );

}

/** @}

 */