rt_at91_ether.h

/*
 * 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

#include <rtdm/driver.h>
#include <rtskb.h>

/* Davicom 9161 PHY */
#define MII_DM9161_ID   0x0181b880
#define MII_DM9161A_ID  0x0181b8a0

/* Davicom specific registers */
#define MII_DSCR_REG    16
#define MII_DSCSR_REG   17
#define MII_DSINTR_REG  21

/* Intel LXT971A PHY */
#define MII_LXT971A_ID  0x001378E0

/* Intel specific registers */
#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

/* Broadcom specific registers */
#define MII_BCMINTR_REG 26

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

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

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

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

#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 net_device_stats stats;
        struct mii_if_info mii;                 /* ethtool support */
        struct at91_eth_data board_data;        /* board-specific configuration */
        struct clk *ether_clk;                  /* clock */

        /* PHY */
        unsigned long phy_type;                 /* type of PHY (PHY_ID) */
        rtdm_lock_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 rtskb *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 */

        /* RT Net */
        rtdm_irq_t irq_handle;
        rtdm_irq_t phy_irq_handle;
};

#endif