Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
ethernet-xaui.c
Go to the documentation of this file.
1 /**********************************************************************
2  * Author: Cavium Networks
3  *
4  * Contact: [email protected]
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 **********************************************************************/
27 #include <linux/kernel.h>
28 #include <linux/netdevice.h>
29 #include <linux/ratelimit.h>
30 #include <net/dst.h>
31 
32 #include <asm/octeon/octeon.h>
33 
34 #include "ethernet-defines.h"
35 #include "octeon-ethernet.h"
36 #include "ethernet-util.h"
37 
38 #include <asm/octeon/cvmx-helper.h>
39 
41 
43 {
44  union cvmx_gmxx_prtx_cfg gmx_cfg;
45  struct octeon_ethernet *priv = netdev_priv(dev);
46  int interface = INTERFACE(priv->port);
47  int index = INDEX(priv->port);
48  cvmx_helper_link_info_t link_info;
49 
50  gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
51  gmx_cfg.s.en = 1;
52  cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
53 
54  if (!octeon_is_simulation()) {
55  link_info = cvmx_helper_link_get(priv->port);
56  if (!link_info.s.link_up)
57  netif_carrier_off(dev);
58  }
59  return 0;
60 }
61 
63 {
64  union cvmx_gmxx_prtx_cfg gmx_cfg;
65  struct octeon_ethernet *priv = netdev_priv(dev);
66  int interface = INTERFACE(priv->port);
67  int index = INDEX(priv->port);
68 
69  gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
70  gmx_cfg.s.en = 0;
71  cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
72  return 0;
73 }
74 
75 static void cvm_oct_xaui_poll(struct net_device *dev)
76 {
77  struct octeon_ethernet *priv = netdev_priv(dev);
79 
80  link_info = cvmx_helper_link_get(priv->port);
81  if (link_info.u64 == priv->link_info)
82  return;
83 
84  link_info = cvmx_helper_link_autoconf(priv->port);
85  priv->link_info = link_info.u64;
86 
87  /* Tell Linux */
88  if (link_info.s.link_up) {
89 
90  if (!netif_carrier_ok(dev))
91  netif_carrier_on(dev);
92  if (priv->queue != -1)
94  ("%s: %u Mbps %s duplex, port %2d, queue %2d\n",
95  dev->name, link_info.s.speed,
96  (link_info.s.full_duplex) ? "Full" : "Half",
97  priv->port, priv->queue);
98  else
100  ("%s: %u Mbps %s duplex, port %2d, POW\n",
101  dev->name, link_info.s.speed,
102  (link_info.s.full_duplex) ? "Full" : "Half",
103  priv->port);
104  } else {
105  if (netif_carrier_ok(dev))
106  netif_carrier_off(dev);
107  printk_ratelimited("%s: Link down\n", dev->name);
108  }
109 }
110 
112 {
113  struct octeon_ethernet *priv = netdev_priv(dev);
114  cvm_oct_common_init(dev);
115  dev->netdev_ops->ndo_stop(dev);
116  if (!octeon_is_simulation() && priv->phydev == NULL)
117  priv->poll = cvm_oct_xaui_poll;
118 
119  return 0;
120 }
121 
123 {
125 }