Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / octeon / ethernet-sgmii.c

diff --git a/kernel/drivers/staging/octeon/ethernet-sgmii.c b/kernel/drivers/staging/octeon/ethernet-sgmii.c
new file mode 100644 (file)
index 0000000..21a7a17
--- /dev/null
+++ b/kernel/drivers/staging/octeon/ethernet-sgmii.c
@@ -0,0 +1,141 @@
+/**********************************************************************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2007 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+**********************************************************************/
+#include <linux/phy.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/ratelimit.h>
+#include <net/dst.h>
+
+#include <asm/octeon/octeon.h>
+
+#include "ethernet-defines.h"
+#include "octeon-ethernet.h"
+#include "ethernet-util.h"
+#include "ethernet-mdio.h"
+
+#include <asm/octeon/cvmx-helper.h>
+
+#include <asm/octeon/cvmx-gmxx-defs.h>
+
+static void cvm_oct_sgmii_poll(struct net_device *dev)
+{
+       struct octeon_ethernet *priv = netdev_priv(dev);
+       cvmx_helper_link_info_t link_info;
+
+       link_info = cvmx_helper_link_get(priv->port);
+       if (link_info.u64 == priv->link_info)
+               return;
+
+       link_info = cvmx_helper_link_autoconf(priv->port);
+       priv->link_info = link_info.u64;
+
+       /* Tell Linux */
+       if (link_info.s.link_up) {
+
+               if (!netif_carrier_ok(dev))
+                       netif_carrier_on(dev);
+               if (priv->queue != -1)
+                       printk_ratelimited
+                           ("%s: %u Mbps %s duplex, port %2d, queue %2d\n",
+                            dev->name, link_info.s.speed,
+                            (link_info.s.full_duplex) ? "Full" : "Half",
+                            priv->port, priv->queue);
+               else
+                       printk_ratelimited
+                               ("%s: %u Mbps %s duplex, port %2d, POW\n",
+                                dev->name, link_info.s.speed,
+                                (link_info.s.full_duplex) ? "Full" : "Half",
+                                priv->port);
+       } else {
+               if (netif_carrier_ok(dev))
+                       netif_carrier_off(dev);
+               printk_ratelimited("%s: Link down\n", dev->name);
+       }
+}
+
+int cvm_oct_sgmii_open(struct net_device *dev)
+{
+       union cvmx_gmxx_prtx_cfg gmx_cfg;
+       struct octeon_ethernet *priv = netdev_priv(dev);
+       int interface = INTERFACE(priv->port);
+       int index = INDEX(priv->port);
+       cvmx_helper_link_info_t link_info;
+       int rv;
+
+       rv = cvm_oct_phy_setup_device(dev);
+       if (rv)
+               return rv;
+
+       gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+       gmx_cfg.s.en = 1;
+       cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
+
+       if (octeon_is_simulation())
+               return 0;
+
+       if (priv->phydev) {
+               int r = phy_read_status(priv->phydev);
+
+               if (r == 0 && priv->phydev->link == 0)
+                       netif_carrier_off(dev);
+               cvm_oct_adjust_link(dev);
+       } else {
+               link_info = cvmx_helper_link_get(priv->port);
+               if (!link_info.s.link_up)
+                       netif_carrier_off(dev);
+               priv->poll = cvm_oct_sgmii_poll;
+               cvm_oct_sgmii_poll(dev);
+       }
+       return 0;
+}
+
+int cvm_oct_sgmii_stop(struct net_device *dev)
+{
+       union cvmx_gmxx_prtx_cfg gmx_cfg;
+       struct octeon_ethernet *priv = netdev_priv(dev);
+       int interface = INTERFACE(priv->port);
+       int index = INDEX(priv->port);
+
+       gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
+       gmx_cfg.s.en = 0;
+       cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
+       return cvm_oct_common_stop(dev);
+}
+
+int cvm_oct_sgmii_init(struct net_device *dev)
+{
+       cvm_oct_common_init(dev);
+       dev->netdev_ops->ndo_stop(dev);
+
+       /* FIXME: Need autoneg logic */
+       return 0;
+}
+
+void cvm_oct_sgmii_uninit(struct net_device *dev)
+{
+       cvm_oct_common_uninit(dev);
+}