at91_ether.h

Go to the documentation of this file.

/*
 * Ethernet driver for the Atmel AT91RM9200 (Thunder)
 *
 *  Copyright (C) SAN People (Pty) Ltd
 *
 * Based on an earlier Atmel EMAC macrocell driver by Atmel and Lineo Inc.
 * Initial version by Rick Bronson.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#ifndef AT91_ETHERNET
#define AT91_ETHERNET


/* Davicom 9161 PHY */
#define MII_DM9161_ID       0x0181b880
#define MII_DM9161A_ID      0x0181b8a0
#define MII_DSCR_REG        16
#define MII_DSCSR_REG       17
#define MII_DSINTR_REG      21

/* Intel LXT971A PHY */
#define MII_LXT971A_ID      0x001378E0
#define MII_ISINTE_REG      18
#define MII_ISINTS_REG      19
#define MII_LEDCTRL_REG     20

/* Realtek RTL8201 PHY */
#define MII_RTL8201_ID      0x00008200

/* Broadcom BCM5221 PHY */
#define MII_BCM5221_ID      0x004061e0
#define MII_BCMINTR_REG     26

/* National Semiconductor DP83847 */
#define MII_DP83847_ID      0x20005c30

/* National Semiconductor DP83848 */
#define MII_DP83848_ID      0x20005c90
#define MII_DPPHYSTS_REG    16
#define MII_DPMICR_REG      17
#define MII_DPMISR_REG      18

/* Altima AC101L PHY */
#define MII_AC101L_ID       0x00225520

/* Micrel KS8721 PHY */
#define MII_KS8721_ID       0x00221610

/* Teridian 78Q2123/78Q2133 */
#define MII_T78Q21x3_ID     0x000e7230
#define MII_T78Q21INT_REG   17

/* SMSC LAN83C185 */
#define MII_LAN83C185_ID    0x0007C0A0

/* ........................................................................ */

#define MAX_RBUFF_SZ    0x600       /* 1518 rounded up */
#define MAX_RX_DESCR    9       /* max number of receive buffers */

#define EMAC_DESC_DONE  0x00000001  /* bit for if DMA is done */
#define EMAC_DESC_WRAP  0x00000002  /* bit for wrap */

#define EMAC_BROADCAST  0x80000000  /* broadcast address */
#define EMAC_MULTICAST  0x40000000  /* multicast address */
#define EMAC_UNICAST    0x20000000  /* unicast address */

struct rbf_t
{
    unsigned int addr;
    unsigned long size;
};

struct recv_desc_bufs
{
    struct rbf_t descriptors[MAX_RX_DESCR];     /* must be on sizeof (rbf_t) boundary */
    char recv_buf[MAX_RX_DESCR][MAX_RBUFF_SZ];  /* must be on long boundary */
};

struct at91_private
{
    struct mii_if_info mii;         /* ethtool support */
    struct macb_platform_data board_data;   /* board-specific
                         * configuration (shared with
                         * macb for common data */
    void __iomem *emac_base;        /* base register address */
    struct clk *ether_clk;          /* clock */

    /* PHY */
    unsigned long phy_type;         /* type of PHY (PHY_ID) */
    spinlock_t lock;            /* lock for MDI interface */
    short phy_media;            /* media interface type */
    unsigned short phy_address;     /* 5-bit MDI address of PHY (0..31) */
    struct timer_list check_timer;      /* Poll link status */

    /* Transmit */
    struct sk_buff *skb;            /* holds skb until xmit interrupt completes */
    dma_addr_t skb_physaddr;        /* phys addr from pci_map_single */
    int skb_length;             /* saved skb length for pci_unmap_single */

    /* Receive */
    int rxBuffIndex;            /* index into receive descriptor list */
    struct recv_desc_bufs *dlist;       /* descriptor list address */
    struct recv_desc_bufs *dlist_phys;  /* descriptor list physical address */
};

#endif