--- /dev/null
+/**********************************************************************
+ * 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/kernel.h>
+#include <linux/mii.h>
+#include <net/dst.h>
+
+#include <asm/atomic.h>
+#include <asm/octeon/octeon.h>
+
+#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 */
+}
git.openpandora.org / pandora-kernel.git / blobdiff