greth.h

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/*
 * SPDX-FileCopyrightText: 2026 Matvii Ivashchenko
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#include <stdint.h>
#include <stdbool.h>
 
#include "net/netdev.h"
#include "net/netdev/eth.h"
 
#ifdef __cplusplus
extern "C" {
#endif


#ifndef CONFIG_GRETH_RX_DESC_NUM
#define CONFIG_GRETH_RX_DESC_NUM    (8U)
#endif

#ifndef CONFIG_GRETH_TX_DESC_NUM
#define CONFIG_GRETH_TX_DESC_NUM    (4U)
#endif

#define GRETH_MAX_FRAME_LEN         (1518U)

#define GRETH_BUF_SIZE              (1536U)

#define GRETH_ANEG_TIMEOUT          (100000U)

typedef struct {
    volatile uint32_t ctrl;     
    volatile uint32_t addr;     
} greth_desc_t;

typedef struct {
    uint32_t base_addr; 
    unsigned irq;       
    uint8_t  mac[6];    
} greth_params_t;

typedef struct {
    netdev_t netdev;            
 
    const greth_params_t *params; 
    greth_desc_t *tx_desc;        
    greth_desc_t *rx_desc;        
    uint8_t      *tx_buf;         
 
    unsigned rx_idx;        
    unsigned tx_idx;        
 
    unsigned phy_addr;      
    bool     gbit;          
} greth_t;

void greth_setup(greth_t *dev, const greth_params_t *params, uint8_t index);
 
#ifdef __cplusplus
}
#endif