/*
   Copyright (c) 2015 Broadcom Corporation
   All Rights Reserved

    <:label-BRCM:2015:DUAL/GPL:standard
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License, version 2, as published by
    the Free Software Foundation (the "GPL").
    
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    
    
    A copy of the GPL is available at http://www.broadcom.com/licenses/GPLv2.php, or by
    writing to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.
    
:>
*/

/*
 *  Created on: Jan 2016
 *      Author: yuval.raviv@broadcom.com
 */

#include "mac_drv.h"

#define MAX_MAC_DEVS 16

extern mac_drv_t mac_drv_unimac;
extern mac_drv_t mac_drv_lport;
extern mac_drv_t mac_drv_gmac;
extern mac_drv_t mac_drv_sf2;
#ifdef MAC_XPORT
extern mac_drv_t mac_drv_xport;
#endif
static mac_drv_t *mac_drivers[MAC_TYPE_MAX] = {};

int mac_driver_set(mac_drv_t *mac_drv)
{
    if (mac_drivers[mac_drv->mac_type])
    {
        printk("Failed adding mac driver %s: already set\n", mac_drv->name);
        return -1;
    }
    else
    {
        mac_drivers[mac_drv->mac_type] = mac_drv;
        return 0;
    }
}
EXPORT_SYMBOL(mac_driver_set);

int mac_driver_init(mac_type_t mac_type)
{
    mac_drv_t *mac_drv;

    if (!(mac_drv = mac_drivers[mac_type]))
        return 0;

    return mac_drv_init(mac_drv);
}
EXPORT_SYMBOL(mac_driver_init);

int mac_drivers_set(void)
{
    int ret = 0;

#ifdef MAC_UNIMAC
    ret |= mac_driver_set(&mac_drv_unimac);
#endif
#ifdef MAC_LPORT
    ret |= mac_driver_set(&mac_drv_lport);
#endif
#ifdef MAC_GMAC
    ret |= mac_driver_set(&mac_drv_gmac);
#endif
#if defined(MAC_SF2) || defined(MAC_SF2_EXTERNAL)
    ret |= mac_driver_set(&mac_drv_sf2);
#endif
#ifdef MAC_XPORT
    ret |= mac_driver_set(&mac_drv_xport);
#endif

    return ret;
}
EXPORT_SYMBOL(mac_drivers_set);

int mac_drivers_init(void)
{
    int ret = 0;

    ret |= mac_driver_init(MAC_TYPE_UNIMAC);
    ret |= mac_driver_init(MAC_TYPE_LPORT);
    ret |= mac_driver_init(MAC_TYPE_GMAC);
    ret |= mac_driver_init(MAC_TYPE_SF2);
    ret |= mac_driver_init(MAC_TYPE_XPORT);

    return ret;
}
EXPORT_SYMBOL(mac_drivers_init);

static mac_dev_t mac_devices[MAX_MAC_DEVS] = {};

#ifdef __KERNEL__
/* For internal use only by proc interface */
int mac_devices_internal_index(mac_dev_t *mac_dev)
{
    uint32_t i;

    for (i = 0; i < MAX_MAC_DEVS; i++)
    {
        if (&mac_devices[i] == mac_dev)
            return i;
    }

    return -1;
}
EXPORT_SYMBOL(mac_devices_internal_index);
#endif

static mac_dev_t *mac_dev_get(mac_type_t mac_type, int mac_id)
{
    int i;
    mac_dev_t *mac_dev = NULL;

    for (i = 0; i < MAX_MAC_DEVS; i++)
    {
        if (!mac_devices[i].mac_drv)
            continue;

        if (mac_devices[i].mac_drv->mac_type != mac_type)
            continue;

        if (mac_devices[i].mac_id != mac_id)
            continue;

        mac_dev = &mac_devices[i];
        break;
    }

    return mac_dev;
}

mac_dev_t *mac_dev_add(mac_type_t mac_type, int mac_id, void *priv)
{
    uint32_t i;
    mac_drv_t *mac_drv = NULL;
    mac_dev_t *mac_dev = NULL;

    if (!(mac_drv = mac_drivers[mac_type]))
    {
        printk("Failed to find MAC driver: mac_type=%d\n", mac_type);
        return NULL;
    }

    if ((mac_dev = mac_dev_get(mac_type, mac_id)))
    {
        printk("Mac device already exists: %s:%d\n", mac_drv->name, mac_id);
        return NULL;
    }

    for (i = 0; i < MAX_MAC_DEVS && mac_devices[i].mac_drv != NULL; i++);

    if (i ==  MAX_MAC_DEVS)
    {
        printk("Failed adding mac device: %s:%d\n", mac_drv->name, mac_id);
        return NULL;
    }

    mac_dev = &mac_devices[i];
    
    mac_dev->mac_drv = mac_drv;
    mac_dev->mac_id = mac_id;
    mac_dev->priv = priv;

    if (mac_drv_dev_add(mac_dev))
    {
        printk("Failed to add MAC device to the driver: %s:%d\n", mac_drv->name, mac_id);
        mac_dev_del(mac_dev);
        return NULL;
    }

    return mac_dev;
}
EXPORT_SYMBOL(mac_dev_add);

int mac_dev_del(mac_dev_t *mac_dev)
{
    mac_drv_dev_del(mac_dev);
    memset(mac_dev, 0, sizeof(mac_dev_t));

    return 0;
}
EXPORT_SYMBOL(mac_dev_del);