mii.h

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/*
 * SPDX-FileCopyrightText: 2020 Otto-von-Guericke-Universität Magdeburg
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#include <stdbool.h>
#include <stdint.h>
 
#include "bitarithm.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#define MII_BMCR            (0x00U) 
#define MII_BMSR            (0x01U) 
#define MII_PHYID1          (0x02U) 
#define MII_PHYID2          (0x03U) 
#define MII_ADVERTISE       (0x04U) 
#define MII_LPA             (0x05U) 
#define MII_EXPANSION       (0x06U) 
#define MII_ESTATUS         (0x0fU) 
#define MII_IRQ             (0x1bU) 

#define MII_BMCR_RESET      BIT15   
#define MII_BMCR_LOOP       BIT14   
#define MII_BMCR_AN_ENABLE  BIT12   
#define MII_BMCR_POWER_DOWN BIT11   
#define MII_BMCR_ISOLATE    BIT10   
#define MII_BMCR_AN_RESTART BIT9    
#define MII_BMCR_FULL_DPLX  BIT8    
#define MII_BMCR_HALF_DPLX  (0)     
#define MII_BMCR_COLL_TEST  BIT7    
#define MII_BMCR_SPEED_10   (0)     
#define MII_BMCR_SPEED_100  BIT13   
#define MII_BMCR_SPEED_1000 BIT6    

#define MII_BMSR_100_T4     BIT15   
#define MII_BMSR_100_TX_F   BIT14   
#define MII_BMSR_100_TX_H   BIT13   
#define MII_BMSR_10_F       BIT12   
#define MII_BMSR_10_H       BIT11   
#define MII_BMSR_100_T2_F   BIT10   
#define MII_BMSR_100_T2_H   BIT9    
#define MII_BMSR_ESTATUS    BIT8    
#define MII_BMSR_AN_DONE    BIT5    
#define MII_BMSR_FAULT      BIT4    
#define MII_BMSR_HAS_AN     BIT3    
#define MII_BMSR_LINK       BIT2    
#define MII_BMSR_JABBER     BIT1    
#define MII_BMSR_EXTENDED   BIT0    

#define MII_ADVERTISE_100_F BIT8    
#define MII_ADVERTISE_100_H BIT7    
#define MII_ADVERTISE_10_F  BIT6    
#define MII_ADVERTISE_10_H  BIT5    
#define MII_ADVERTISE_100   (BIT7 | BIT8)   
#define MII_ADVERTISE_10    (BIT5 | BIT6)   

#define MII_LPA_100_F       BIT8    
#define MII_LPA_100_H       BIT7    
#define MII_LPA_10_F        BIT6    
#define MII_LPA_10_H        BIT5    
#define MII_LPA_100         (BIT7 | BIT8)   
#define MII_LPA_10          (BIT5 | BIT6)   

#define MII_LPA_HAS_AN      BIT0    

#define MII_IRQ_LINK_UP     BIT0    
#define MII_IRQ_RMT_FAULT   BIT1    
#define MII_IRQ_LINK_DOWN   BIT2    
#define MII_IRQ_LPA_ACK     BIT3    
#define MII_IRQ_PD_FAULT    BIT4    
#define MII_IRQ_PAGE_RX     BIT5    
#define MII_IRQ_RX_ERROR    BIT6    
#define MII_IRQ_JABBER      BIT7    
#define MII_IRQ_EN_LINK_UP     BIT8    
#define MII_IRQ_EN_RMT_FAULT   BIT9    
#define MII_IRQ_EN_LINK_DOWN   BIT10   
#define MII_IRQ_EN_LPA_ACK     BIT11    
#define MII_IRQ_EN_PD_FAULT    BIT12    
#define MII_IRQ_EN_PAGE_RX     BIT13    
#define MII_IRQ_EN_RX_ERROR    BIT14    
#define MII_IRQ_EN_JABBER      BIT15    

static inline bool mii_can_100_mbps_full_dp(uint16_t bmsr)
{
    return (bmsr & (MII_BMSR_100_TX_F | MII_BMSR_100_T2_F));
}

static inline bool mii_can_100_mbps_half_dp(uint16_t bmsr)
{
    return (bmsr & (MII_BMSR_100_T4 | MII_BMSR_100_TX_H | MII_BMSR_100_T2_H));
}

static inline bool mii_can_10_mbps_full_dp(uint16_t bmsr)
{
    return (bmsr & MII_BMSR_10_F);
}

static inline bool mii_can_10_mbps_half_dp(uint16_t bmsr)
{
    return (bmsr & MII_BMSR_10_H);
}
 
#ifdef __cplusplus
}
#endif