/*
 * (C) Copyright 2003
 * Ingo Assmus <ingo.assmus@keymile.com>
 *
 * based on - Driver for MV64460X ethernet ports
 * Copyright (C) 2002 rabeeh@galileo.co.il
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

/*
 * mv_eth.h - header file for the polled mode GT ethernet driver
 */

#ifndef __DB64460_ETH_H__
#define __DB64460_ETH_H__

#include <asm/types.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <common.h>
#include <net.h>
#include "mv_regs.h"
#include <asm/errno.h>


/*************************************************************************
**************************************************************************
**************************************************************************
*  The first part is the high level driver of the gigE ethernet ports.   *
**************************************************************************
**************************************************************************
*************************************************************************/
/* In case not using SG on Tx, define MAX_SKB_FRAGS as 0 */
#ifndef MAX_SKB_FRAGS
#define MAX_SKB_FRAGS 0
#endif

/* Port attributes */
/*#define MAX_RX_QUEUE_NUM      8*/
/*#define MAX_TX_QUEUE_NUM      8*/
#define MAX_RX_QUEUE_NUM        1
#define MAX_TX_QUEUE_NUM        1


/* Use one TX queue and one RX queue */
#define MV64460_TX_QUEUE_NUM 1
#define MV64460_RX_QUEUE_NUM 1

/*
 * Number of RX / TX descriptors on RX / TX rings.
 * Note that allocating RX descriptors is done by allocating the RX
 * ring AND a preallocated RX buffers (skb's) for each descriptor.
 * The TX descriptors only allocates the TX descriptors ring,
 * with no pre allocated TX buffers (skb's are allocated by higher layers.
 */

/* Default TX ring size is 10 descriptors */
#ifdef CONFIG_MV64460_ETH_TXQUEUE_SIZE
#define MV64460_TX_QUEUE_SIZE CONFIG_MV64460_ETH_TXQUEUE_SIZE
#else
#define MV64460_TX_QUEUE_SIZE 4
#endif

/* Default RX ring size is 4 descriptors */
#ifdef  CONFIG_MV64460_ETH_RXQUEUE_SIZE
#define MV64460_RX_QUEUE_SIZE CONFIG_MV64460_ETH_RXQUEUE_SIZE
#else
#define MV64460_RX_QUEUE_SIZE 4
#endif

#ifdef CONFIG_RX_BUFFER_SIZE
#define MV64460_RX_BUFFER_SIZE CONFIG_RX_BUFFER_SIZE
#else
#define MV64460_RX_BUFFER_SIZE 1600
#endif

#ifdef CONFIG_TX_BUFFER_SIZE
#define MV64460_TX_BUFFER_SIZE CONFIG_TX_BUFFER_SIZE
#else
#define MV64460_TX_BUFFER_SIZE 1600
#endif

/*
 *      Network device statistics. Akin to the 2.0 ether stats but
 *      with byte counters.
 */

struct net_device_stats
{
        unsigned long   rx_packets;             /* total packets received       */
        unsigned long   tx_packets;             /* total packets transmitted    */
        unsigned long   rx_bytes;               /* total bytes received         */
        unsigned long   tx_bytes;               /* total bytes transmitted      */
        unsigned long   rx_errors;              /* bad packets received         */
        unsigned long   tx_errors;              /* packet transmit problems     */
        unsigned long   rx_dropped;             /* no space in linux buffers    */
        unsigned long   tx_dropped;             /* no space available in linux  */
        unsigned long   multicast;              /* multicast packets received   */
        unsigned long   collisions;

        /* detailed rx_errors: */
        unsigned long   rx_length_errors;
        unsigned long   rx_over_errors;         /* receiver ring buff overflow  */
        unsigned long   rx_crc_errors;          /* recved pkt with crc error    */
        unsigned long   rx_frame_errors;        /* recv'd frame alignment error */
        unsigned long   rx_fifo_errors;         /* recv'r fifo overrun          */
        unsigned long   rx_missed_errors;       /* receiver missed packet       */

        /* detailed tx_errors */
        unsigned long   tx_aborted_errors;
        unsigned long   tx_carrier_errors;
        unsigned long   tx_fifo_errors;
        unsigned long   tx_heartbeat_errors;
        unsigned long   tx_window_errors;

        /* for cslip etc */
        unsigned long   rx_compressed;
        unsigned long   tx_compressed;
};


/* Private data structure used for ethernet device */
struct mv64460_eth_priv {
    unsigned int port_num;
    struct net_device_stats *stats;

/* to buffer area aligned */
    char * p_eth_tx_buffer[MV64460_TX_QUEUE_SIZE+1];    /*pointers to alligned tx buffs in memory space */
    char * p_eth_rx_buffer[MV64460_RX_QUEUE_SIZE+1];    /*pointers to allinged rx buffs in memory space */

    /* Size of Tx Ring per queue */
    unsigned int tx_ring_size [MAX_TX_QUEUE_NUM];


    /* Size of Rx Ring per queue */
    unsigned int rx_ring_size [MAX_RX_QUEUE_NUM];

    /* Magic Number for Ethernet running */
    unsigned int eth_running;

};

int mv64460_eth_init (struct eth_device *dev);
int mv64460_eth_stop (struct eth_device *dev);
int mv64460_eth_start_xmit(struct eth_device *dev, void *packet, int length);
int mv64460_eth_open (struct eth_device *dev);


/*************************************************************************
**************************************************************************
**************************************************************************
*  The second part is the low level driver of the gigE ethernet ports.   *
**************************************************************************
**************************************************************************
*************************************************************************/


/********************************************************************************
 * Header File for : MV-643xx network interface header
 *
 * DESCRIPTION:
 *       This header file contains macros typedefs and function declaration for
 *       the Marvell Gig Bit Ethernet Controller.
 *
 * DEPENDENCIES:
 *       None.
 *
 *******************************************************************************/


#ifdef CONFIG_SPECIAL_CONSISTENT_MEMORY
#ifdef CONFIG_MV64460_SRAM_CACHEABLE
/* In case SRAM is cacheable but not cache coherent */
#define D_CACHE_FLUSH_LINE(addr, offset)       \
{                   \
  __asm__ __volatile__ ("dcbf %0,%1" : : "r" (addr), "r" (offset)); \
}
#else
/* In case SRAM is cache coherent or non-cacheable */
#define D_CACHE_FLUSH_LINE(addr, offset) ;
#endif
#else
#ifdef CONFIG_NOT_COHERENT_CACHE
/* In case of descriptors on DDR but not cache coherent */
#define D_CACHE_FLUSH_LINE(addr, offset)       \
{                   \
  __asm__ __volatile__ ("dcbf %0,%1" : : "r" (addr), "r" (offset)); \
}
#else
/* In case of descriptors on DDR and cache coherent */
#define D_CACHE_FLUSH_LINE(addr, offset) ;
#endif /* CONFIG_NOT_COHERENT_CACHE */
#endif /* CONFIG_SPECIAL_CONSISTENT_MEMORY */


#define CPU_PIPE_FLUSH             \
{                 \
  __asm__ __volatile__ ("eieio");         \
}


/* defines  */

/* Default port configuration value */
#define PORT_CONFIG_VALUE                       \
             ETH_UNICAST_NORMAL_MODE            |   \
             ETH_DEFAULT_RX_QUEUE_0             |   \
             ETH_DEFAULT_RX_ARP_QUEUE_0         |   \
             ETH_RECEIVE_BC_IF_NOT_IP_OR_ARP    |   \
             ETH_RECEIVE_BC_IF_IP               |   \
             ETH_RECEIVE_BC_IF_ARP              |   \
             ETH_CAPTURE_TCP_FRAMES_DIS         |   \
             ETH_CAPTURE_UDP_FRAMES_DIS         |   \
             ETH_DEFAULT_RX_TCP_QUEUE_0         |   \
             ETH_DEFAULT_RX_UDP_QUEUE_0         |   \
             ETH_DEFAULT_RX_BPDU_QUEUE_0

/* Default port extend configuration value */
#define PORT_CONFIG_EXTEND_VALUE                \
             ETH_SPAN_BPDU_PACKETS_AS_NORMAL    |   \
             ETH_PARTITION_DISABLE


/* Default sdma control value */
#ifdef CONFIG_NOT_COHERENT_CACHE
#define PORT_SDMA_CONFIG_VALUE                          \
                         ETH_RX_BURST_SIZE_16_64BIT     |       \
                         GT_ETH_IPG_INT_RX(0)                   |       \
                         ETH_TX_BURST_SIZE_16_64BIT;
#else
#define PORT_SDMA_CONFIG_VALUE                  \
                         ETH_RX_BURST_SIZE_4_64BIT      |       \
                         GT_ETH_IPG_INT_RX(0)                   |       \
                         ETH_TX_BURST_SIZE_4_64BIT;
#endif

#define GT_ETH_IPG_INT_RX(value)                \
            ((value & 0x3fff) << 8)

/* Default port serial control value */
#define PORT_SERIAL_CONTROL_VALUE                           \
                        ETH_FORCE_LINK_PASS                     |       \
                        ETH_ENABLE_AUTO_NEG_FOR_DUPLX           |       \
                        ETH_DISABLE_AUTO_NEG_FOR_FLOW_CTRL      |       \
                        ETH_ADV_SYMMETRIC_FLOW_CTRL             |       \
                        ETH_FORCE_FC_MODE_NO_PAUSE_DIS_TX       |       \
                        ETH_FORCE_BP_MODE_NO_JAM                |       \
                        BIT9                                    |       \
                        ETH_DO_NOT_FORCE_LINK_FAIL              |       \
                        ETH_RETRANSMIT_16_ETTEMPTS              |       \
                        ETH_ENABLE_AUTO_NEG_SPEED_GMII          |       \
                        ETH_DTE_ADV_0                           |       \
                        ETH_DISABLE_AUTO_NEG_BYPASS             |       \
                        ETH_AUTO_NEG_NO_CHANGE                  |       \
                        ETH_MAX_RX_PACKET_1552BYTE              |       \
                        ETH_CLR_EXT_LOOPBACK                    |       \
                        ETH_SET_FULL_DUPLEX_MODE                |       \
                        ETH_ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX;

#define RX_BUFFER_MAX_SIZE  0xFFFF
#define TX_BUFFER_MAX_SIZE  0xFFFF   /* Buffer are limited to 64k */

#define RX_BUFFER_MIN_SIZE  0x8
#define TX_BUFFER_MIN_SIZE  0x8

/* Tx WRR confoguration macros */
#define PORT_MAX_TRAN_UNIT          0x24    /* MTU register (default) 9KByte */
#define PORT_MAX_TOKEN_BUCKET_SIZE  0x_fFFF  /* PMTBS register (default)      */
#define PORT_TOKEN_RATE             1023    /* PTTBRC register (default)     */

/* MAC accepet/reject macros */
#define ACCEPT_MAC_ADDR     0
#define REJECT_MAC_ADDR     1

/* Size of a Tx/Rx descriptor used in chain list data structure */
#define RX_DESC_ALIGNED_SIZE            0x20
#define TX_DESC_ALIGNED_SIZE            0x20

/* An offest in Tx descriptors to store data for buffers less than 8 Bytes */
#define TX_BUF_OFFSET_IN_DESC       0x18
/* Buffer offset from buffer pointer */
#define RX_BUF_OFFSET                           0x2

/* Gap define */
#define ETH_BAR_GAP                                     0x8
#define ETH_SIZE_REG_GAP                                0x8
#define ETH_HIGH_ADDR_REMAP_REG_GAP                     0x4
#define ETH_PORT_ACCESS_CTRL_GAP                        0x4

/* Gigabit Ethernet Unit Global Registers */

/* MIB Counters register definitions */
#define ETH_MIB_GOOD_OCTETS_RECEIVED_LOW   0x0
#define ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH  0x4
#define ETH_MIB_BAD_OCTETS_RECEIVED        0x8
#define ETH_MIB_INTERNAL_MAC_TRANSMIT_ERR  0xc
#define ETH_MIB_GOOD_FRAMES_RECEIVED       0x10
#define ETH_MIB_BAD_FRAMES_RECEIVED        0x14
#define ETH_MIB_BROADCAST_FRAMES_RECEIVED  0x18
#define ETH_MIB_MULTICAST_FRAMES_RECEIVED  0x1c
#define ETH_MIB_FRAMES_64_OCTETS           0x20
#define ETH_MIB_FRAMES_65_TO_127_OCTETS    0x24
#define ETH_MIB_FRAMES_128_TO_255_OCTETS   0x28
#define ETH_MIB_FRAMES_256_TO_511_OCTETS   0x2c
#define ETH_MIB_FRAMES_512_TO_1023_OCTETS  0x30
#define ETH_MIB_FRAMES_1024_TO_MAX_OCTETS  0x34
#define ETH_MIB_GOOD_OCTETS_SENT_LOW       0x38
#define ETH_MIB_GOOD_OCTETS_SENT_HIGH      0x3c
#define ETH_MIB_GOOD_FRAMES_SENT           0x40
#define ETH_MIB_EXCESSIVE_COLLISION        0x44
#define ETH_MIB_MULTICAST_FRAMES_SENT      0x48
#define ETH_MIB_BROADCAST_FRAMES_SENT      0x4c
#define ETH_MIB_UNREC_MAC_CONTROL_RECEIVED 0x50
#define ETH_MIB_FC_SENT                    0x54
#define ETH_MIB_GOOD_FC_RECEIVED           0x58
#define ETH_MIB_BAD_FC_RECEIVED            0x5c
#define ETH_MIB_UNDERSIZE_RECEIVED         0x60
#define ETH_MIB_FRAGMENTS_RECEIVED         0x64
#define ETH_MIB_OVERSIZE_RECEIVED          0x68
#define ETH_MIB_JABBER_RECEIVED            0x6c
#define ETH_MIB_MAC_RECEIVE_ERROR          0x70
#define ETH_MIB_BAD_CRC_EVENT              0x74
#define ETH_MIB_COLLISION                  0x78
#define ETH_MIB_LATE_COLLISION             0x7c

/* Port serial status reg (PSR) */
#define ETH_INTERFACE_GMII_MII                          0
#define ETH_INTERFACE_PCM                               BIT0
#define ETH_LINK_IS_DOWN                                0
#define ETH_LINK_IS_UP                                  BIT1
#define ETH_PORT_AT_HALF_DUPLEX                         0
#define ETH_PORT_AT_FULL_DUPLEX                         BIT2
#define ETH_RX_FLOW_CTRL_DISABLED                       0
#define ETH_RX_FLOW_CTRL_ENBALED                        BIT3
#define ETH_GMII_SPEED_100_10                           0
#define ETH_GMII_SPEED_1000                             BIT4
#define ETH_MII_SPEED_10                                0
#define ETH_MII_SPEED_100                               BIT5
#define ETH_NO_TX                                       0
#define ETH_TX_IN_PROGRESS                              BIT7
#define ETH_BYPASS_NO_ACTIVE                            0
#define ETH_BYPASS_ACTIVE                               BIT8
#define ETH_PORT_NOT_AT_PARTITION_STATE                 0
#define ETH_PORT_AT_PARTITION_STATE                     BIT9
#define ETH_PORT_TX_FIFO_NOT_EMPTY                      0
#define ETH_PORT_TX_FIFO_EMPTY                          BIT10


/* These macros describes the Port configuration reg (Px_cR) bits */
#define ETH_UNICAST_NORMAL_MODE                         0
#define ETH_UNICAST_PROMISCUOUS_MODE                    BIT0
#define ETH_DEFAULT_RX_QUEUE_0                          0
#define ETH_DEFAULT_RX_QUEUE_1                          BIT1
#define ETH_DEFAULT_RX_QUEUE_2                          BIT2
#define ETH_DEFAULT_RX_QUEUE_3                          (BIT2 | BIT1)
#define ETH_DEFAULT_RX_QUEUE_4                          BIT3
#define ETH_DEFAULT_RX_QUEUE_5                          (BIT3 | BIT1)
#define ETH_DEFAULT_RX_QUEUE_6                          (BIT3 | BIT2)
#define ETH_DEFAULT_RX_QUEUE_7                          (BIT3 | BIT2 | BIT1)
#define ETH_DEFAULT_RX_ARP_QUEUE_0                      0
#define ETH_DEFAULT_RX_ARP_QUEUE_1                      BIT4
#define ETH_DEFAULT_RX_ARP_QUEUE_2                      BIT5
#define ETH_DEFAULT_RX_ARP_QUEUE_3                      (BIT5 | BIT4)
#define ETH_DEFAULT_RX_ARP_QUEUE_4                      BIT6
#define ETH_DEFAULT_RX_ARP_QUEUE_5                      (BIT6 | BIT4)
#define ETH_DEFAULT_RX_ARP_QUEUE_6                      (BIT6 | BIT5)
#define ETH_DEFAULT_RX_ARP_QUEUE_7                      (BIT6 | BIT5 | BIT4)
#define ETH_RECEIVE_BC_IF_NOT_IP_OR_ARP                 0
#define ETH_REJECT_BC_IF_NOT_IP_OR_ARP                  BIT7
#define ETH_RECEIVE_BC_IF_IP                            0
#define ETH_REJECT_BC_IF_IP                             BIT8
#define ETH_RECEIVE_BC_IF_ARP                           0
#define ETH_REJECT_BC_IF_ARP                            BIT9
#define ETH_TX_AM_NO_UPDATE_ERROR_SUMMARY               BIT12
#define ETH_CAPTURE_TCP_FRAMES_DIS                      0
#define ETH_CAPTURE_TCP_FRAMES_EN                       BIT14
#define ETH_CAPTURE_UDP_FRAMES_DIS                      0
#define ETH_CAPTURE_UDP_FRAMES_EN                       BIT15
#define ETH_DEFAULT_RX_TCP_QUEUE_0                      0
#define ETH_DEFAULT_RX_TCP_QUEUE_1                      BIT16
#define ETH_DEFAULT_RX_TCP_QUEUE_2                      BIT17
#define ETH_DEFAULT_RX_TCP_QUEUE_3                      (BIT17 | BIT16)
#define ETH_DEFAULT_RX_TCP_QUEUE_4                      BIT18
#define ETH_DEFAULT_RX_TCP_QUEUE_5                      (BIT18 | BIT16)
#define ETH_DEFAULT_RX_TCP_QUEUE_6                      (BIT18 | BIT17)
#define ETH_DEFAULT_RX_TCP_QUEUE_7                      (BIT18 | BIT17 | BIT16)
#define ETH_DEFAULT_RX_UDP_QUEUE_0                      0
#define ETH_DEFAULT_RX_UDP_QUEUE_1                      BIT19
#define ETH_DEFAULT_RX_UDP_QUEUE_2                      BIT20
#define ETH_DEFAULT_RX_UDP_QUEUE_3                      (BIT20 | BIT19)
#define ETH_DEFAULT_RX_UDP_QUEUE_4                      (BIT21
#define ETH_DEFAULT_RX_UDP_QUEUE_5                      (BIT21 | BIT19)
#define ETH_DEFAULT_RX_UDP_QUEUE_6                      (BIT21 | BIT20)
#define ETH_DEFAULT_RX_UDP_QUEUE_7                      (BIT21 | BIT20 | BIT19)
#define ETH_DEFAULT_RX_BPDU_QUEUE_0                      0
#define ETH_DEFAULT_RX_BPDU_QUEUE_1                     BIT22
#define ETH_DEFAULT_RX_BPDU_QUEUE_2                     BIT23
#define ETH_DEFAULT_RX_BPDU_QUEUE_3                     (BIT23 | BIT22)
#define ETH_DEFAULT_RX_BPDU_QUEUE_4                     BIT24
#define ETH_DEFAULT_RX_BPDU_QUEUE_5                     (BIT24 | BIT22)
#define ETH_DEFAULT_RX_BPDU_QUEUE_6                     (BIT24 | BIT23)
#define ETH_DEFAULT_RX_BPDU_QUEUE_7                     (BIT24 | BIT23 | BIT22)


/* These macros describes the Port configuration extend reg (Px_cXR) bits*/
#define ETH_CLASSIFY_EN                                 BIT0
#define ETH_SPAN_BPDU_PACKETS_AS_NORMAL                 0
#define ETH_SPAN_BPDU_PACKETS_TO_RX_QUEUE_7             BIT1
#define ETH_PARTITION_DISABLE                           0
#define ETH_PARTITION_ENABLE                            BIT2


/* Tx/Rx queue command reg (RQCR/TQCR)*/
#define ETH_QUEUE_0_ENABLE                              BIT0
#define ETH_QUEUE_1_ENABLE                              BIT1
#define ETH_QUEUE_2_ENABLE                              BIT2
#define ETH_QUEUE_3_ENABLE                              BIT3
#define ETH_QUEUE_4_ENABLE                              BIT4
#define ETH_QUEUE_5_ENABLE                              BIT5
#define ETH_QUEUE_6_ENABLE                              BIT6
#define ETH_QUEUE_7_ENABLE                              BIT7
#define ETH_QUEUE_0_DISABLE                             BIT8
#define ETH_QUEUE_1_DISABLE                             BIT9
#define ETH_QUEUE_2_DISABLE                             BIT10
#define ETH_QUEUE_3_DISABLE                             BIT11
#define ETH_QUEUE_4_DISABLE                             BIT12
#define ETH_QUEUE_5_DISABLE                             BIT13
#define ETH_QUEUE_6_DISABLE                             BIT14
#define ETH_QUEUE_7_DISABLE                             BIT15

/* These macros describes the Port Sdma configuration reg (SDCR) bits */
#define ETH_RIFB                                        BIT0
#define ETH_RX_BURST_SIZE_1_64BIT                       0
#define ETH_RX_BURST_SIZE_2_64BIT                       BIT1
#define ETH_RX_BURST_SIZE_4_64BIT                       BIT2
#define ETH_RX_BURST_SIZE_8_64BIT                       (BIT2 | BIT1)
#define ETH_RX_BURST_SIZE_16_64BIT                      BIT3
#define ETH_BLM_RX_NO_SWAP                              BIT4
#define ETH_BLM_RX_BYTE_SWAP                            0
#define ETH_BLM_TX_NO_SWAP                              BIT5
#define ETH_BLM_TX_BYTE_SWAP                            0
#define ETH_DESCRIPTORS_BYTE_SWAP                       BIT6
#define ETH_DESCRIPTORS_NO_SWAP                         0
#define ETH_TX_BURST_SIZE_1_64BIT                       0
#define ETH_TX_BURST_SIZE_2_64BIT                       BIT22
#define ETH_TX_BURST_SIZE_4_64BIT                       BIT23
#define ETH_TX_BURST_SIZE_8_64BIT                       (BIT23 | BIT22)
#define ETH_TX_BURST_SIZE_16_64BIT                      BIT24

/* These macros describes the Port serial control reg (PSCR) bits */
#define ETH_SERIAL_PORT_DISABLE                         0
#define ETH_SERIAL_PORT_ENABLE                          BIT0
#define ETH_FORCE_LINK_PASS                             BIT1
#define ETH_DO_NOT_FORCE_LINK_PASS                      0
#define ETH_ENABLE_AUTO_NEG_FOR_DUPLX                   0
#define ETH_DISABLE_AUTO_NEG_FOR_DUPLX                  BIT2
#define ETH_ENABLE_AUTO_NEG_FOR_FLOW_CTRL               0
#define ETH_DISABLE_AUTO_NEG_FOR_FLOW_CTRL              BIT3
#define ETH_ADV_NO_FLOW_CTRL                            0
#define ETH_ADV_SYMMETRIC_FLOW_CTRL                     BIT4
#define ETH_FORCE_FC_MODE_NO_PAUSE_DIS_TX               0
#define ETH_FORCE_FC_MODE_TX_PAUSE_DIS                  BIT5
#define ETH_FORCE_BP_MODE_NO_JAM                        0
#define ETH_FORCE_BP_MODE_JAM_TX                        BIT7
#define ETH_FORCE_BP_MODE_JAM_TX_ON_RX_ERR              BIT8
#define ETH_FORCE_LINK_FAIL                             0
#define ETH_DO_NOT_FORCE_LINK_FAIL                      BIT10
#define ETH_RETRANSMIT_16_ETTEMPTS                      0
#define ETH_RETRANSMIT_FOREVER                          BIT11
#define ETH_DISABLE_AUTO_NEG_SPEED_GMII                 BIT13
#define ETH_ENABLE_AUTO_NEG_SPEED_GMII                  0
#define ETH_DTE_ADV_0                                   0
#define ETH_DTE_ADV_1                                   BIT14
#define ETH_DISABLE_AUTO_NEG_BYPASS                     0
#define ETH_ENABLE_AUTO_NEG_BYPASS                      BIT15
#define ETH_AUTO_NEG_NO_CHANGE                          0
#define ETH_RESTART_AUTO_NEG                            BIT16
#define ETH_MAX_RX_PACKET_1518BYTE                      0
#define ETH_MAX_RX_PACKET_1522BYTE                      BIT17
#define ETH_MAX_RX_PACKET_1552BYTE                      BIT18
#define ETH_MAX_RX_PACKET_9022BYTE                      (BIT18 | BIT17)
#define ETH_MAX_RX_PACKET_9192BYTE                      BIT19
#define ETH_MAX_RX_PACKET_9700BYTE                      (BIT19 | BIT17)
#define ETH_SET_EXT_LOOPBACK                            BIT20
#define ETH_CLR_EXT_LOOPBACK                            0
#define ETH_SET_FULL_DUPLEX_MODE                        BIT21
#define ETH_SET_HALF_DUPLEX_MODE                        0
#define ETH_ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX       BIT22
#define ETH_DISABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX      0
#define ETH_SET_GMII_SPEED_TO_10_100                    0
#define ETH_SET_GMII_SPEED_TO_1000                      BIT23
#define ETH_SET_MII_SPEED_TO_10                         0
#define ETH_SET_MII_SPEED_TO_100                        BIT24


/* SMI reg */
#define ETH_SMI_BUSY            BIT28   /* 0 - Write, 1 - Read          */
#define ETH_SMI_READ_VALID      BIT27   /* 0 - Write, 1 - Read          */
#define ETH_SMI_OPCODE_WRITE    0       /* Completion of Read operation */
#define ETH_SMI_OPCODE_READ     BIT26   /* Operation is in progress             */

/* SDMA command status fields macros */

/* Tx & Rx descriptors status */
#define ETH_ERROR_SUMMARY                   (BIT0)

/* Tx & Rx descriptors command */
#define ETH_BUFFER_OWNED_BY_DMA             (BIT31)

/* Tx descriptors status */
#define ETH_LC_ERROR                        (0    )
#define ETH_UR_ERROR                        (BIT1 )
#define ETH_RL_ERROR                        (BIT2 )
#define ETH_LLC_SNAP_FORMAT                 (BIT9 )

/* Rx descriptors status */
#define ETH_CRC_ERROR                       (0    )
#define ETH_OVERRUN_ERROR                   (BIT1 )
#define ETH_MAX_FRAME_LENGTH_ERROR          (BIT2 )
#define ETH_RESOURCE_ERROR                  ((BIT2 | BIT1))
#define ETH_VLAN_TAGGED                     (BIT19)
#define ETH_BPDU_FRAME                      (BIT20)
#define ETH_TCP_FRAME_OVER_IP_V_4           (0    )
#define ETH_UDP_FRAME_OVER_IP_V_4           (BIT21)
#define ETH_OTHER_FRAME_TYPE                (BIT22)
#define ETH_LAYER_2_IS_ETH_V_2              (BIT23)
#define ETH_FRAME_TYPE_IP_V_4               (BIT24)
#define ETH_FRAME_HEADER_OK                 (BIT25)
#define ETH_RX_LAST_DESC                    (BIT26)
#define ETH_RX_FIRST_DESC                   (BIT27)
#define ETH_UNKNOWN_DESTINATION_ADDR        (BIT28)
#define ETH_RX_ENABLE_INTERRUPT             (BIT29)
#define ETH_LAYER_4_CHECKSUM_OK             (BIT30)

/* Rx descriptors byte count */
#define ETH_FRAME_FRAGMENTED                (BIT2)

/* Tx descriptors command */
#define ETH_LAYER_4_CHECKSUM_FIRST_DESC         (BIT10)
#define ETH_FRAME_SET_TO_VLAN               (BIT15)
#define ETH_TCP_FRAME                       (0    )
#define ETH_UDP_FRAME                       (BIT16)
#define ETH_GEN_TCP_UDP_CHECKSUM            (BIT17)
#define ETH_GEN_IP_V_4_CHECKSUM             (BIT18)
#define ETH_ZERO_PADDING                    (BIT19)
#define ETH_TX_LAST_DESC                    (BIT20)
#define ETH_TX_FIRST_DESC                   (BIT21)
#define ETH_GEN_CRC                         (BIT22)
#define ETH_TX_ENABLE_INTERRUPT             (BIT23)
#define ETH_AUTO_MODE                       (BIT30)

/* Address decode parameters */
/* Ethernet Base Address Register bits */
#define EBAR_TARGET_DRAM                                        0x00000000
#define EBAR_TARGET_DEVICE                                      0x00000001
#define EBAR_TARGET_CBS                                         0x00000002
#define EBAR_TARGET_PCI0                                        0x00000003
#define EBAR_TARGET_PCI1                                        0x00000004
#define EBAR_TARGET_CUNIT                                       0x00000005
#define EBAR_TARGET_AUNIT                                       0x00000006
#define EBAR_TARGET_GUNIT                                       0x00000007

/* Window attributes */
#define EBAR_ATTR_DRAM_CS0                                      0x00000E00
#define EBAR_ATTR_DRAM_CS1                                      0x00000D00
#define EBAR_ATTR_DRAM_CS2                                      0x00000B00
#define EBAR_ATTR_DRAM_CS3                                      0x00000700

/* DRAM Target interface */
#define EBAR_ATTR_DRAM_NO_CACHE_COHERENCY       0x00000000
#define EBAR_ATTR_DRAM_CACHE_COHERENCY_WT       0x00001000
#define EBAR_ATTR_DRAM_CACHE_COHERENCY_WB       0x00002000

/* Device Bus Target interface */
#define EBAR_ATTR_DEVICE_DEVCS0                         0x00001E00
#define EBAR_ATTR_DEVICE_DEVCS1                         0x00001D00
#define EBAR_ATTR_DEVICE_DEVCS2                         0x00001B00
#define EBAR_ATTR_DEVICE_DEVCS3                         0x00001700
#define EBAR_ATTR_DEVICE_BOOTCS3                        0x00000F00

/* PCI Target interface */
#define EBAR_ATTR_PCI_BYTE_SWAP                         0x00000000
#define EBAR_ATTR_PCI_NO_SWAP                           0x00000100
#define EBAR_ATTR_PCI_BYTE_WORD_SWAP            0x00000200
#define EBAR_ATTR_PCI_WORD_SWAP                         0x00000300
#define EBAR_ATTR_PCI_NO_SNOOP_NOT_ASSERT       0x00000000
#define EBAR_ATTR_PCI_NO_SNOOP_ASSERT           0x00000400
#define EBAR_ATTR_PCI_IO_SPACE                          0x00000000
#define EBAR_ATTR_PCI_MEMORY_SPACE                      0x00000800
#define EBAR_ATTR_PCI_REQ64_FORCE                       0x00000000
#define EBAR_ATTR_PCI_REQ64_SIZE                        0x00001000

/* CPU 60x bus or internal SRAM interface */
#define EBAR_ATTR_CBS_SRAM_BLOCK0                       0x00000000
#define EBAR_ATTR_CBS_SRAM_BLOCK1                       0x00000100
#define EBAR_ATTR_CBS_SRAM                                      0x00000000
#define EBAR_ATTR_CBS_CPU_BUS                           0x00000800

/* Window access control */
#define EWIN_ACCESS_NOT_ALLOWED 0
#define EWIN_ACCESS_READ_ONLY   BIT0
#define EWIN_ACCESS_FULL        (BIT1 | BIT0)
#define EWIN0_ACCESS_MASK               0x0003
#define EWIN1_ACCESS_MASK               0x000C
#define EWIN2_ACCESS_MASK               0x0030
#define EWIN3_ACCESS_MASK               0x00C0

/* typedefs */

typedef enum _eth_port
{
    ETH_0 = 0,
        ETH_1 = 1,
        ETH_2 = 2
}ETH_PORT;

typedef enum _eth_func_ret_status
{
    ETH_OK,                     /* Returned as expected.                    */
    ETH_ERROR,                  /* Fundamental error.                       */
    ETH_RETRY,                  /* Could not process request. Try later.    */
    ETH_END_OF_JOB,             /* Ring has nothing to process.             */
    ETH_QUEUE_FULL,             /* Ring resource error.                     */
    ETH_QUEUE_LAST_RESOURCE     /* Ring resources about to exhaust.         */
}ETH_FUNC_RET_STATUS;

typedef enum _eth_queue
{
        ETH_Q0 = 0,
        ETH_Q1 = 1,
        ETH_Q2 = 2,
        ETH_Q3 = 3,
        ETH_Q4 = 4,
        ETH_Q5 = 5,
        ETH_Q6 = 6,
    ETH_Q7 = 7
} ETH_QUEUE;

typedef enum _addr_win
{
        ETH_WIN0,
        ETH_WIN1,
        ETH_WIN2,
        ETH_WIN3,
        ETH_WIN4,
    ETH_WIN5
} ETH_ADDR_WIN;

typedef enum _eth_target
{
        ETH_TARGET_DRAM  ,
        ETH_TARGET_DEVICE,
        ETH_TARGET_CBS   ,
        ETH_TARGET_PCI0  ,
        ETH_TARGET_PCI1
}ETH_TARGET;

typedef struct _eth_rx_desc
{
        unsigned short  byte_cnt           ;    /* Descriptor buffer byte count     */
        unsigned short  buf_size           ;    /* Buffer size                      */
        unsigned int    cmd_sts    ;    /* Descriptor command status        */
        unsigned int    next_desc_ptr;    /* Next descriptor pointer          */
        unsigned int    buf_ptr    ;    /* Descriptor buffer pointer        */
    unsigned int    return_info ;    /* User resource return information */
} ETH_RX_DESC;


typedef struct _eth_tx_desc
{
    unsigned short  byte_cnt       ;    /* Descriptor buffer byte count     */
    unsigned short  l4i_chk        ;    /* CPU provided TCP Checksum        */
    unsigned int    cmd_sts        ;    /* Descriptor command status        */
    unsigned int    next_desc_ptr;    /* Next descriptor pointer          */
    unsigned int    buf_ptr        ;    /* Descriptor buffer pointer        */
    unsigned int    return_info ;    /* User resource return information */
} ETH_TX_DESC;

/* Unified struct for Rx and Tx operations. The user is not required to */
/* be familier with neither Tx nor Rx descriptors.                       */
typedef struct _pkt_info
{
        unsigned short  byte_cnt   ;    /* Descriptor buffer byte count     */
        unsigned short  l4i_chk    ;    /* Tx CPU provided TCP Checksum     */
        unsigned int    cmd_sts    ;    /* Descriptor command status        */
        unsigned int    buf_ptr    ;    /* Descriptor buffer pointer        */
    unsigned int    return_info ;    /* User resource return information */
} PKT_INFO;


typedef struct _eth_win_param
{
    ETH_ADDR_WIN win;   /* Window number. See ETH_ADDR_WIN enum */
    ETH_TARGET  target;    /* System targets. See ETH_TARGET enum */
    unsigned short attributes;  /* BAR attributes. See above macros. */
    unsigned int base_addr; /* Window base address in unsigned int form */
    unsigned int high_addr; /* Window high address in unsigned int form */
    unsigned int size; /* Size in MBytes. Must be % 64Kbyte. */
    bool enable; /* Enable/disable access to the window. */
    unsigned short access_ctrl; /* Access ctrl register. see above macros */
} ETH_WIN_PARAM;


/* Ethernet port specific infomation */

typedef struct _eth_port_ctrl
{
    ETH_PORT  port_num; /* User Ethernet port number */
    int port_phy_addr;  /* User phy address of Ethrnet port */
    unsigned char port_mac_addr[6]; /* User defined port MAC address. */
    unsigned int  port_config; /* User port configuration value */
    unsigned int  port_config_extend; /* User port config extend value */
    unsigned int  port_sdma_config; /* User port SDMA config value */
    unsigned int  port_serial_control; /* User port serial control value */
    unsigned int  port_tx_queue_command; /* Port active Tx queues summary */
    unsigned int  port_rx_queue_command; /* Port active Rx queues summary */

    /* User function to cast virtual address to CPU bus address */
    unsigned int  (*port_virt_to_phys)(unsigned int addr);
    /* User scratch pad for user specific data structures */
    void *port_private;

    bool rx_resource_err[MAX_RX_QUEUE_NUM]; /* Rx ring resource error flag */
    bool tx_resource_err[MAX_TX_QUEUE_NUM]; /* Tx ring resource error flag */

    /* Tx/Rx rings managment indexes fields. For driver use */

    /* Next available Rx resource */
    volatile ETH_RX_DESC *p_rx_curr_desc_q[MAX_RX_QUEUE_NUM];
    /* Returning Rx resource */
    volatile ETH_RX_DESC *p_rx_used_desc_q[MAX_RX_QUEUE_NUM];

    /* Next available Tx resource */
    volatile ETH_TX_DESC *p_tx_curr_desc_q[MAX_TX_QUEUE_NUM];
    /* Returning Tx resource */
    volatile ETH_TX_DESC *p_tx_used_desc_q[MAX_TX_QUEUE_NUM];
    /* An extra Tx index to support transmit of multiple buffers per packet */
    volatile ETH_TX_DESC *p_tx_first_desc_q[MAX_TX_QUEUE_NUM];

    /* Tx/Rx rings size and base variables fields. For driver use */

    volatile ETH_RX_DESC        *p_rx_desc_area_base[MAX_RX_QUEUE_NUM];
    unsigned int                 rx_desc_area_size[MAX_RX_QUEUE_NUM];
    char                        *p_rx_buffer_base[MAX_RX_QUEUE_NUM];

    volatile ETH_TX_DESC        *p_tx_desc_area_base[MAX_TX_QUEUE_NUM];
    unsigned int                 tx_desc_area_size[MAX_TX_QUEUE_NUM];
    char                        *p_tx_buffer_base[MAX_TX_QUEUE_NUM];

} ETH_PORT_INFO;


/* ethernet.h API list */

/* Port operation control routines */
static void eth_port_init (ETH_PORT_INFO *p_eth_port_ctrl);
static void eth_port_reset(ETH_PORT     eth_port_num);
static bool eth_port_start(ETH_PORT_INFO *p_eth_port_ctrl);


/* Port MAC address routines */
static void eth_port_uc_addr_set (ETH_PORT eth_port_num,
                                  unsigned char *p_addr,
                                  ETH_QUEUE queue);
#if 0   /* FIXME */
static void eth_port_mc_addr    (ETH_PORT eth_port_num,
                                 unsigned char *p_addr,
                                 ETH_QUEUE queue,
                                 int option);
#endif

/* PHY and MIB routines */
static bool ethernet_phy_reset(ETH_PORT eth_port_num);

static bool eth_port_write_smi_reg(ETH_PORT eth_port_num,
                                   unsigned int phy_reg,
                                   unsigned int value);

static bool eth_port_read_smi_reg(ETH_PORT eth_port_num,
                                  unsigned int phy_reg,
                                  unsigned int* value);

static void eth_clear_mib_counters(ETH_PORT     eth_port_num);

/* Port data flow control routines */
static ETH_FUNC_RET_STATUS eth_port_send    (ETH_PORT_INFO *p_eth_port_ctrl,
                                             ETH_QUEUE tx_queue,
                                             PKT_INFO *p_pkt_info);
static ETH_FUNC_RET_STATUS eth_tx_return_desc(ETH_PORT_INFO *p_eth_port_ctrl,
                                              ETH_QUEUE tx_queue,
                                              PKT_INFO *p_pkt_info);
static ETH_FUNC_RET_STATUS eth_port_receive (ETH_PORT_INFO *p_eth_port_ctrl,
                                             ETH_QUEUE rx_queue,
                                             PKT_INFO *p_pkt_info);
static ETH_FUNC_RET_STATUS eth_rx_return_buff(ETH_PORT_INFO *p_eth_port_ctrl,
                                              ETH_QUEUE rx_queue,
                                              PKT_INFO *p_pkt_info);


static bool ether_init_tx_desc_ring(ETH_PORT_INFO  *p_eth_port_ctrl,
                                    ETH_QUEUE   tx_queue,
                                    int                         tx_desc_num,
                                    int                         tx_buff_size,
                                    unsigned int        tx_desc_base_addr,
                                    unsigned int        tx_buff_base_addr);

static bool ether_init_rx_desc_ring(ETH_PORT_INFO  *p_eth_port_ctrl,
                                    ETH_QUEUE   rx_queue,
                                    int                         rx_desc_num,
                                    int                         rx_buff_size,
                                    unsigned int        rx_desc_base_addr,
                                    unsigned int        rx_buff_base_addr);

#endif /* MV64460_ETH_ */