net/macb: ethtool interface: add register dump feature

	return phy_ethtool_sset(phydev, cmd);

}

static int macb_get_regs_len(struct net_device *netdev)

{

	return MACB_GREGS_NBR * sizeof(u32);

}

static void macb_get_regs(struct net_device *dev, struct ethtool_regs *regs,

			  void *p)

{

	struct macb *bp = netdev_priv(dev);

	unsigned int tail, head;

	u32 *regs_buff = p;

	regs->version = (macb_readl(bp, MID) & ((1 << MACB_REV_SIZE) - 1))

			| MACB_GREGS_VERSION;

	tail = macb_tx_ring_wrap(bp->tx_tail);

	head = macb_tx_ring_wrap(bp->tx_head);

	regs_buff[0]  = macb_readl(bp, NCR);

	regs_buff[1]  = macb_or_gem_readl(bp, NCFGR);

	regs_buff[2]  = macb_readl(bp, NSR);

	regs_buff[3]  = macb_readl(bp, TSR);

	regs_buff[4]  = macb_readl(bp, RBQP);

	regs_buff[5]  = macb_readl(bp, TBQP);

	regs_buff[6]  = macb_readl(bp, RSR);

	regs_buff[7]  = macb_readl(bp, IMR);

	regs_buff[8]  = tail;

	regs_buff[9]  = head;

	regs_buff[10] = macb_tx_dma(bp, tail);

	regs_buff[11] = macb_tx_dma(bp, head);

	if (macb_is_gem(bp)) {

		regs_buff[12] = gem_readl(bp, USRIO);

		regs_buff[13] = gem_readl(bp, DMACFG);

	}

}

const struct ethtool_ops macb_ethtool_ops = {

	.get_settings		= macb_get_settings,

	.set_settings		= macb_set_settings,

	.get_regs_len		= macb_get_regs_len,

	.get_regs		= macb_get_regs,

	.get_link		= ethtool_op_get_link,

	.get_ts_info		= ethtool_op_get_ts_info,

};

#ifndef _MACB_H

#define _MACB_H

#define MACB_GREGS_NBR 16

#define MACB_GREGS_VERSION 1

/* MACB register offsets */

#define MACB_NCR				0x0000

#define MACB_NCFGR				0x0004