/********************************************************************** * 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 #include #include #include #include #include "ethernet-defines.h" #include "ethernet-tx.h" #include "ethernet-mdio.h" #include "ethernet-util.h" #include "octeon-ethernet.h" #include "ethernet-common.h" #include "cvmx-pip.h" #include "cvmx-pko.h" #include "cvmx-fau.h" #include "cvmx-helper.h" #include "cvmx-gmxx-defs.h" /** * Get the low level ethernet statistics * * @dev: Device to get the statistics from * Returns Pointer to the statistics */ static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev) { cvmx_pip_port_status_t rx_status; cvmx_pko_port_status_t tx_status; struct octeon_ethernet *priv = netdev_priv(dev); if (priv->port < CVMX_PIP_NUM_INPUT_PORTS) { if (octeon_is_simulation()) { /* The simulator doesn't support statistics */ memset(&rx_status, 0, sizeof(rx_status)); memset(&tx_status, 0, sizeof(tx_status)); } else { cvmx_pip_get_port_status(priv->port, 1, &rx_status); cvmx_pko_get_port_status(priv->port, 1, &tx_status); } priv->stats.rx_packets += rx_status.inb_packets; priv->stats.tx_packets += tx_status.packets; priv->stats.rx_bytes += rx_status.inb_octets; priv->stats.tx_bytes += tx_status.octets; priv->stats.multicast += rx_status.multicast_packets; priv->stats.rx_crc_errors += rx_status.inb_errors; priv->stats.rx_frame_errors += rx_status.fcs_align_err_packets; /* * The drop counter must be incremented atomically * since the RX tasklet also increments it. */ #ifdef CONFIG_64BIT atomic64_add(rx_status.dropped_packets, (atomic64_t *)&priv->stats.rx_dropped); #else atomic_add(rx_status.dropped_packets, (atomic_t *)&priv->stats.rx_dropped); #endif } return &priv->stats; } /** * Set the multicast list. Currently unimplemented. * * @dev: Device to work on */ static void cvm_oct_common_set_multicast_list(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); if ((interface < 2) && (cvmx_helper_interface_get_mode(interface) != CVMX_HELPER_INTERFACE_MODE_SPI)) { union cvmx_gmxx_rxx_adr_ctl control; control.u64 = 0; control.s.bcst = 1; /* Allow broadcast MAC addresses */ if (dev->mc_list || (dev->flags & IFF_ALLMULTI) || (dev->flags & IFF_PROMISC)) /* Force accept multicast packets */ control.s.mcst = 2; else /* Force reject multicat packets */ control.s.mcst = 1; if (dev->flags & IFF_PROMISC) /* * Reject matches if promisc. Since CAM is * shut off, should accept everything. */ control.s.cam_mode = 0; else /* Filter packets based on the CAM */ control.s.cam_mode = 1; gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64 & ~1ull); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index, interface), control.u64); if (dev->flags & IFF_PROMISC) cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN (index, interface), 0); else cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN (index, interface), 1); cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); } } /** * Set the hardware MAC address for a device * * @dev: Device to change the MAC address for * @addr: Address structure to change it too. MAC address is addr + 2. * Returns Zero on success */ static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr) { struct octeon_ethernet *priv = netdev_priv(dev); union cvmx_gmxx_prtx_cfg gmx_cfg; int interface = INTERFACE(priv->port); int index = INDEX(priv->port); memcpy(dev->dev_addr, addr + 2, 6); if ((interface < 2) && (cvmx_helper_interface_get_mode(interface) != CVMX_HELPER_INTERFACE_MODE_SPI)) { int i; uint8_t *ptr = addr; uint64_t mac = 0; for (i = 0; i < 6; i++) mac = (mac << 8) | (uint64_t) (ptr[i + 2]); gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64 & ~1ull); cvmx_write_csr(CVMX_GMXX_SMACX(index, interface), mac); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index, interface), ptr[2]); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index, interface), ptr[3]); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index, interface), ptr[4]); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index, interface), ptr[5]); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index, interface), ptr[6]); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index, interface), ptr[7]); cvm_oct_common_set_multicast_list(dev); cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); } return 0; } /** * Change the link MTU. Unimplemented * * @dev: Device to change * @new_mtu: The new MTU * * Returns Zero on success */ static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu) { struct octeon_ethernet *priv = netdev_priv(dev); int interface = INTERFACE(priv->port); int index = INDEX(priv->port); #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) int vlan_bytes = 4; #else int vlan_bytes = 0; #endif /* * Limit the MTU to make sure the ethernet packets are between * 64 bytes and 65535 bytes. */ if ((new_mtu + 14 + 4 + vlan_bytes < 64) || (new_mtu + 14 + 4 + vlan_bytes > 65392)) { pr_err("MTU must be between %d and %d.\n", 64 - 14 - 4 - vlan_bytes, 65392 - 14 - 4 - vlan_bytes); return -EINVAL; } dev->mtu = new_mtu; if ((interface < 2) && (cvmx_helper_interface_get_mode(interface) != CVMX_HELPER_INTERFACE_MODE_SPI)) { /* Add ethernet header and FCS, and VLAN if configured. */ int max_packet = new_mtu + 14 + 4 + vlan_bytes; if (OCTEON_IS_MODEL(OCTEON_CN3XXX) || OCTEON_IS_MODEL(OCTEON_CN58XX)) { /* Signal errors on packets larger than the MTU */ cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index, interface), max_packet); } else { /* * Set the hardware to truncate packets larger * than the MTU and smaller the 64 bytes. */ union cvmx_pip_frm_len_chkx frm_len_chk; frm_len_chk.u64 = 0; frm_len_chk.s.minlen = 64; frm_len_chk.s.maxlen = max_packet; cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface), frm_len_chk.u64); } /* * Set the hardware to truncate packets larger than * the MTU. The jabber register must be set to a * multiple of 8 bytes, so round up. */ cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index, interface), (max_packet + 7) & ~7u); } return 0; } /** * Per network device initialization * * @dev: Device to initialize * Returns Zero on success */ int cvm_oct_common_init(struct net_device *dev) { static int count; char mac[8] = { 0x00, 0x00, octeon_bootinfo->mac_addr_base[0], octeon_bootinfo->mac_addr_base[1], octeon_bootinfo->mac_addr_base[2], octeon_bootinfo->mac_addr_base[3], octeon_bootinfo->mac_addr_base[4], octeon_bootinfo->mac_addr_base[5] + count }; struct octeon_ethernet *priv = netdev_priv(dev); /* * Force the interface to use the POW send if always_use_pow * was specified or it is in the pow send list. */ if ((pow_send_group != -1) && (always_use_pow || strstr(pow_send_list, dev->name))) priv->queue = -1; if (priv->queue != -1) { dev->hard_start_xmit = cvm_oct_xmit; if (USE_HW_TCPUDP_CHECKSUM) dev->features |= NETIF_F_IP_CSUM; } else dev->hard_start_xmit = cvm_oct_xmit_pow; count++; dev->get_stats = cvm_oct_common_get_stats; dev->set_mac_address = cvm_oct_common_set_mac_address; dev->set_multicast_list = cvm_oct_common_set_multicast_list; dev->change_mtu = cvm_oct_common_change_mtu; dev->do_ioctl = cvm_oct_ioctl; /* We do our own locking, Linux doesn't need to */ dev->features |= NETIF_F_LLTX; SET_ETHTOOL_OPS(dev, &cvm_oct_ethtool_ops); #ifdef CONFIG_NET_POLL_CONTROLLER dev->poll_controller = cvm_oct_poll_controller; #endif cvm_oct_mdio_setup_device(dev); dev->set_mac_address(dev, mac); dev->change_mtu(dev, dev->mtu); /* * Zero out stats for port so we won't mistakenly show * counters from the bootloader. */ memset(dev->get_stats(dev), 0, sizeof(struct net_device_stats)); return 0; } void cvm_oct_common_uninit(struct net_device *dev) { /* Currently nothing to do */ }