/*
	drivers/net/tulip/pnic.c

	Maintained by Jeff Garzik <jgarzik@mandrakesoft.com>
	Copyright 2000,2001  The Linux Kernel Team
	Written/copyright 1994-2001 by Donald Becker.

	This software may be used and distributed according to the terms
	of the GNU General Public License, incorporated herein by reference.

	Please refer to Documentation/DocBook/tulip.{pdf,ps,html}
	for more information on this driver, or visit the project
	Web page at http://sourceforge.net/projects/tulip/

*/
/* Ported to RTnet by Wittawat Yamwong <wittawat@web.de> */

#include <linux/kernel.h>
#include "tulip.h"


void pnic_do_nway(/*RTnet*/struct rtnet_device *rtdev)
{
	struct tulip_private *tp = (struct tulip_private *)rtdev->priv;
	long ioaddr = rtdev->base_addr;
	u32 phy_reg = inl(ioaddr + 0xB8);
	u32 new_csr6 = tp->csr6 & ~0x40C40200;

	if (phy_reg & 0x78000000) { /* Ignore baseT4 */
		if (phy_reg & 0x20000000)		rtdev->if_port = 5;
		else if (phy_reg & 0x40000000)	rtdev->if_port = 3;
		else if (phy_reg & 0x10000000)	rtdev->if_port = 4;
		else if (phy_reg & 0x08000000)	rtdev->if_port = 0;
		tp->nwayset = 1;
		new_csr6 = (rtdev->if_port & 1) ? 0x01860000 : 0x00420000;
		outl(0x32 | (rtdev->if_port & 1), ioaddr + CSR12);
		if (rtdev->if_port & 1)
			outl(0x1F868, ioaddr + 0xB8);
		if (phy_reg & 0x30000000) {
			tp->full_duplex = 1;
			new_csr6 |= 0x00000200;
		}
		if (tulip_debug > 1)
			/*RTnet*/printk(KERN_DEBUG "%s: PNIC autonegotiated status %8.8x, %s.\n",
				   rtdev->name, phy_reg, medianame[rtdev->if_port]);
		if (tp->csr6 != new_csr6) {
			tp->csr6 = new_csr6;
			/* Restart Tx */
			tulip_restart_rxtx(tp);
		}
	}
}