// SPDX-License-Identifier: GPL-2.0+
/*
   Copyright (c) 2015 Broadcom Corporation
   All Rights Reserved

    
*/

/*
 *  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;
extern mac_drv_t mac_drv_53125;
#ifdef MAC_XPORT
extern mac_drv_t mac_drv_xport;
#endif
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
#ifdef MAC_53125
    ret |= mac_driver_set(&mac_drv_53125);
#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);
    ret |= mac_driver_init(MAC_TYPE_53125);

    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);