| 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 <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 | |
| 40 | #include <asm/octeon/cvmx-gmxx-defs.h> |
| 41 | |
| 42 | int cvm_oct_sgmii_open(struct net_device *dev) |
| 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 | |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | int cvm_oct_sgmii_stop(struct net_device *dev) |
| 64 | { |
| 65 | union cvmx_gmxx_prtx_cfg gmx_cfg; |
| 66 | struct octeon_ethernet *priv = netdev_priv(dev); |
| 67 | int interface = INTERFACE(priv->port); |
| 68 | int index = INDEX(priv->port); |
| 69 | |
| 70 | gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); |
| 71 | gmx_cfg.s.en = 0; |
| 72 | cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); |
| 73 | return 0; |
| 74 | } |
| 75 | |
| 76 | static void cvm_oct_sgmii_poll(struct net_device *dev) |
| 77 | { |
| 78 | struct octeon_ethernet *priv = netdev_priv(dev); |
| 79 | cvmx_helper_link_info_t link_info; |
| 80 | |
| 81 | link_info = cvmx_helper_link_get(priv->port); |
| 82 | if (link_info.u64 == priv->link_info) |
| 83 | return; |
| 84 | |
| 85 | link_info = cvmx_helper_link_autoconf(priv->port); |
| 86 | priv->link_info = link_info.u64; |
| 87 | |
| 88 | /* Tell Linux */ |
| 89 | if (link_info.s.link_up) { |
| 90 | |
| 91 | if (!netif_carrier_ok(dev)) |
| 92 | netif_carrier_on(dev); |
| 93 | if (priv->queue != -1) |
| 94 | printk_ratelimited |
| 95 | ("%s: %u Mbps %s duplex, port %2d, queue %2d\n", |
| 96 | dev->name, link_info.s.speed, |
| 97 | (link_info.s.full_duplex) ? "Full" : "Half", |
| 98 | priv->port, priv->queue); |
| 99 | else |
| 100 | printk_ratelimited |
| 101 | ("%s: %u Mbps %s duplex, port %2d, POW\n", |
| 102 | dev->name, link_info.s.speed, |
| 103 | (link_info.s.full_duplex) ? "Full" : "Half", |
| 104 | priv->port); |
| 105 | } else { |
| 106 | if (netif_carrier_ok(dev)) |
| 107 | netif_carrier_off(dev); |
| 108 | printk_ratelimited("%s: Link down\n", dev->name); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | int cvm_oct_sgmii_init(struct net_device *dev) |
| 113 | { |
| 114 | struct octeon_ethernet *priv = netdev_priv(dev); |
| 115 | cvm_oct_common_init(dev); |
| 116 | dev->netdev_ops->ndo_stop(dev); |
| 117 | if (!octeon_is_simulation() && priv->phydev == NULL) |
| 118 | priv->poll = cvm_oct_sgmii_poll; |
| 119 | |
| 120 | /* FIXME: Need autoneg logic */ |
| 121 | return 0; |
| 122 | } |
| 123 | |
| 124 | void cvm_oct_sgmii_uninit(struct net_device *dev) |
| 125 | { |
| 126 | cvm_oct_common_uninit(dev); |
| 127 | } |