staging: octeon-ethernet: consolidate carrier notifications
[deliverable/linux.git] / drivers / staging / octeon / ethernet-sgmii.c
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1/**********************************************************************
2 * Author: Cavium Networks
3 *
4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK
6 *
7 * Copyright (c) 2003-2007 Cavium Networks
8 *
9 * This file is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License, Version 2, as
11 * published by the Free Software Foundation.
12 *
13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT. See the GNU General Public License for more
17 * details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this file; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 * or visit http://www.gnu.org/licenses/.
23 *
24 * This file may also be available under a different license from Cavium.
25 * Contact Cavium Networks for more information
26**********************************************************************/
ec3a2207 27#include <linux/phy.h>
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28#include <linux/kernel.h>
29#include <linux/netdevice.h>
7a2eaf93 30#include <linux/ratelimit.h>
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31#include <net/dst.h>
32
33#include <asm/octeon/octeon.h>
34
35#include "ethernet-defines.h"
36#include "octeon-ethernet.h"
37#include "ethernet-util.h"
ec3a2207 38#include "ethernet-mdio.h"
80ff0fd3 39
af866496 40#include <asm/octeon/cvmx-helper.h>
80ff0fd3 41
af866496 42#include <asm/octeon/cvmx-gmxx-defs.h>
80ff0fd3 43
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44static void cvm_oct_sgmii_poll(struct net_device *dev)
45{
46 struct octeon_ethernet *priv = netdev_priv(dev);
47 cvmx_helper_link_info_t link_info;
48
49 link_info = cvmx_helper_link_get(priv->port);
50 if (link_info.u64 == priv->link_info)
51 return;
52
53 link_info = cvmx_helper_link_autoconf(priv->port);
54 priv->link_info = link_info.u64;
55
56 /* Tell Linux */
57 if (link_info.s.link_up) {
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58 if (!netif_carrier_ok(dev))
59 netif_carrier_on(dev);
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60 } else if (netif_carrier_ok(dev)) {
61 netif_carrier_off(dev);
80ff0fd3 62 }
2638f713 63 cvm_oct_note_carrier(priv, link_info);
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64}
65
ec3a2207 66int cvm_oct_sgmii_open(struct net_device *dev)
80ff0fd3 67{
9e3ae4f9 68 return cvm_oct_common_open(dev, cvm_oct_sgmii_poll, true);
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69}
70
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71int cvm_oct_sgmii_init(struct net_device *dev)
72{
80ff0fd3 73 cvm_oct_common_init(dev);
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74
75 /* FIXME: Need autoneg logic */
76 return 0;
77}
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