release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/octeon/ethernet-xaui.c

   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 **********************************************************************/
  27 #include <linux/kernel.h>
  28 #include <linux/netdevice.h>
  29 #include <net/dst.h>
  30
  31 #include <asm/octeon/octeon.h>
  32
  33 #include "ethernet-defines.h"
  34 #include "octeon-ethernet.h"
  35 #include "ethernet-util.h"
  36
  37 #include "cvmx-helper.h"
  38
  39 #include "cvmx-gmxx-defs.h"
  40
  41 int cvm_oct_xaui_open(struct net_device *dev)
  42 {
  43         union cvmx_gmxx_prtx_cfg gmx_cfg;
  44         struct octeon_ethernet *priv = netdev_priv(dev);
  45         int interface = INTERFACE(priv->port);
  46         int index = INDEX(priv->port);
  47         cvmx_helper_link_info_t link_info;
  48
  49         gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
  50         gmx_cfg.s.en = 1;
  51         cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
  52
  53         if (!octeon_is_simulation()) {
  54                 link_info = cvmx_helper_link_get(priv->port);
  55                 if (!link_info.s.link_up)
  56                         netif_carrier_off(dev);
  57         }
  58         return 0;
  59 }
  60
  61 int cvm_oct_xaui_stop(struct net_device *dev)
  62 {
  63         union cvmx_gmxx_prtx_cfg gmx_cfg;
  64         struct octeon_ethernet *priv = netdev_priv(dev);
  65         int interface = INTERFACE(priv->port);
  66         int index = INDEX(priv->port);
  67
  68         gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
  69         gmx_cfg.s.en = 0;
  70         cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
  71         return 0;
  72 }
  73
  74 static void cvm_oct_xaui_poll(struct net_device *dev)
  75 {
  76         struct octeon_ethernet *priv = netdev_priv(dev);
  77         cvmx_helper_link_info_t link_info;
  78
  79         link_info = cvmx_helper_link_get(priv->port);
  80         if (link_info.u64 == priv->link_info)
  81                 return;
  82
  83         link_info = cvmx_helper_link_autoconf(priv->port);
  84         priv->link_info = link_info.u64;
  85
  86         /* Tell Linux */
  87         if (link_info.s.link_up) {
  88
  89                 if (!netif_carrier_ok(dev))
  90                         netif_carrier_on(dev);
  91                 if (priv->queue != -1)
  92                         DEBUGPRINT
  93                             ("%s: %u Mbps %s duplex, port %2d, queue %2d\n",
  94                              dev->name, link_info.s.speed,
  95                              (link_info.s.full_duplex) ? "Full" : "Half",
  96                              priv->port, priv->queue);
  97                 else
  98                         DEBUGPRINT("%s: %u Mbps %s duplex, port %2d, POW\n",
  99                                    dev->name, link_info.s.speed,
 100                                    (link_info.s.full_duplex) ? "Full" : "Half",
 101                                    priv->port);
 102         } else {
 103                 if (netif_carrier_ok(dev))
 104                         netif_carrier_off(dev);
 105                 DEBUGPRINT("%s: Link down\n", dev->name);
 106         }
 107 }
 108
 109 int cvm_oct_xaui_init(struct net_device *dev)
 110 {
 111         struct octeon_ethernet *priv = netdev_priv(dev);
 112         cvm_oct_common_init(dev);
 113         dev->netdev_ops->ndo_stop(dev);
 114         if (!octeon_is_simulation() && priv->phydev == NULL)
 115                 priv->poll = cvm_oct_xaui_poll;
 116
 117         return 0;
 118 }
 119
 120 void cvm_oct_xaui_uninit(struct net_device *dev)
 121 {
 122         cvm_oct_common_uninit(dev);
 123 }