1. 根目录:
2. drivers
3. net
4. bfin_mac.h

/*
 * Blackfin On-Chip MAC Driver
 *
 * Copyright 2004-2007 Analog Devices Inc.
 *
 * Enter bugs at http://blackfin.uclinux.org/
 *
 * Licensed under the GPL-2 or later.
 */
#ifndef _BFIN_MAC_H_
#define _BFIN_MAC_H_

#include <linux/net_tstamp.h>
#include <linux/clocksource.h>
#include <linux/timecompare.h>
#include <linux/timer.h>
#include <linux/etherdevice.h>
#include <linux/bfin_mac.h>

/*
 * Disable hardware checksum for bug #5600 if writeback cache is
 * enabled. Otherwize, corrupted RX packet will be sent up stack
 * without error mark.
 */
#ifndef CONFIG_BFIN_EXTMEM_WRITEBACK
#define BFIN_MAC_CSUM_OFFLOAD
#endif

#define TX_RECLAIM_JIFFIES (HZ / 5)

struct dma_descriptor {
	struct dma_descriptor *next_dma_desc;
	unsigned long start_addr;
	unsigned short config;
	unsigned short x_count;
};

struct status_area_rx {
#if defined(BFIN_MAC_CSUM_OFFLOAD)
	unsigned short ip_hdr_csum;	/* ip header checksum */
	/* ip payload(udp or tcp or others) checksum */
	unsigned short ip_payload_csum;
#endif
	unsigned long status_word;	/* the frame status word */
};

struct status_area_tx {
	unsigned long status_word;	/* the frame status word */
};

/* use two descriptors for a packet */
struct net_dma_desc_rx {
	struct net_dma_desc_rx *next;
	struct sk_buff *skb;
	struct dma_descriptor desc_a;
	struct dma_descriptor desc_b;
	struct status_area_rx status;
};

/* use two descriptors for a packet */
struct net_dma_desc_tx {
	struct net_dma_desc_tx *next;
	struct sk_buff *skb;
	struct dma_descriptor desc_a;
	struct dma_descriptor desc_b;
	unsigned char packet[1560];
	struct status_area_tx status;
};

struct bfin_mac_local {
	/*
	 * these are things that the kernel wants me to keep, so users
	 * can find out semi-useless statistics of how well the card is
	 * performing
	 */
	struct net_device_stats stats;

	spinlock_t lock;

	int wol;		/* Wake On Lan */
	int irq_wake_requested;
	struct timer_list tx_reclaim_timer;
	struct net_device *ndev;

	/* Data for EMAC_VLAN1 regs */
	u16 vlan1_mask, vlan2_mask;

	/* MII and PHY stuffs */
	int old_link;          /* used by bf537_adjust_link */
	int old_speed;
	int old_duplex;

	struct phy_device *phydev;
	struct mii_bus *mii_bus;

#if defined(CONFIG_BFIN_MAC_USE_HWSTAMP)
	struct cyclecounter cycles;
	struct timecounter clock;
	struct timecompare compare;
	struct hwtstamp_config stamp_cfg;
#endif
};

extern void bfin_get_ether_addr(char *addr);

#endif