net: add support for STMicroelectronics Ethernet controllers.
This is the driver for the ST MAC 10/100/1000 on-chip Ethernet
controllers (Synopsys IP blocks).
Driver documentation:
o http://stlinux.com/drupal/kernel/network/stmmac
Revisions:
o http://stlinux.com/drupal/kernel/network/stmmac-driver-revisions
Performances:
o http://stlinux.com/drupal/benchmarks/networking/stmmac
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/stmmac/stmmac_ethtool.c b/drivers/net/stmmac/stmmac_ethtool.c
new file mode 100644
index 0000000..694ebe6
--- /dev/null
+++ b/drivers/net/stmmac/stmmac_ethtool.c
@@ -0,0 +1,395 @@
+/*******************************************************************************
+ STMMAC Ethtool support
+
+ Copyright (C) 2007-2009 STMicroelectronics Ltd
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
+*******************************************************************************/
+
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/phy.h>
+
+#include "stmmac.h"
+
+#define REG_SPACE_SIZE 0x1054
+#define MAC100_ETHTOOL_NAME "st_mac100"
+#define GMAC_ETHTOOL_NAME "st_gmac"
+
+struct stmmac_stats {
+ char stat_string[ETH_GSTRING_LEN];
+ int sizeof_stat;
+ int stat_offset;
+};
+
+#define STMMAC_STAT(m) \
+ { #m, FIELD_SIZEOF(struct stmmac_extra_stats, m), \
+ offsetof(struct stmmac_priv, xstats.m)}
+
+static const struct stmmac_stats stmmac_gstrings_stats[] = {
+ STMMAC_STAT(tx_underflow),
+ STMMAC_STAT(tx_carrier),
+ STMMAC_STAT(tx_losscarrier),
+ STMMAC_STAT(tx_heartbeat),
+ STMMAC_STAT(tx_deferred),
+ STMMAC_STAT(tx_vlan),
+ STMMAC_STAT(rx_vlan),
+ STMMAC_STAT(tx_jabber),
+ STMMAC_STAT(tx_frame_flushed),
+ STMMAC_STAT(tx_payload_error),
+ STMMAC_STAT(tx_ip_header_error),
+ STMMAC_STAT(rx_desc),
+ STMMAC_STAT(rx_partial),
+ STMMAC_STAT(rx_runt),
+ STMMAC_STAT(rx_toolong),
+ STMMAC_STAT(rx_collision),
+ STMMAC_STAT(rx_crc),
+ STMMAC_STAT(rx_lenght),
+ STMMAC_STAT(rx_mii),
+ STMMAC_STAT(rx_multicast),
+ STMMAC_STAT(rx_gmac_overflow),
+ STMMAC_STAT(rx_watchdog),
+ STMMAC_STAT(da_rx_filter_fail),
+ STMMAC_STAT(sa_rx_filter_fail),
+ STMMAC_STAT(rx_missed_cntr),
+ STMMAC_STAT(rx_overflow_cntr),
+ STMMAC_STAT(tx_undeflow_irq),
+ STMMAC_STAT(tx_process_stopped_irq),
+ STMMAC_STAT(tx_jabber_irq),
+ STMMAC_STAT(rx_overflow_irq),
+ STMMAC_STAT(rx_buf_unav_irq),
+ STMMAC_STAT(rx_process_stopped_irq),
+ STMMAC_STAT(rx_watchdog_irq),
+ STMMAC_STAT(tx_early_irq),
+ STMMAC_STAT(fatal_bus_error_irq),
+ STMMAC_STAT(threshold),
+ STMMAC_STAT(tx_pkt_n),
+ STMMAC_STAT(rx_pkt_n),
+ STMMAC_STAT(poll_n),
+ STMMAC_STAT(sched_timer_n),
+ STMMAC_STAT(normal_irq_n),
+};
+#define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
+
+void stmmac_ethtool_getdrvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ if (!priv->is_gmac)
+ strcpy(info->driver, MAC100_ETHTOOL_NAME);
+ else
+ strcpy(info->driver, GMAC_ETHTOOL_NAME);
+
+ strcpy(info->version, DRV_MODULE_VERSION);
+ info->fw_version[0] = '\0';
+ info->n_stats = STMMAC_STATS_LEN;
+ return;
+}
+
+int stmmac_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+ struct phy_device *phy = priv->phydev;
+ int rc;
+ if (phy == NULL) {
+ pr_err("%s: %s: PHY is not registered\n",
+ __func__, dev->name);
+ return -ENODEV;
+ }
+ if (!netif_running(dev)) {
+ pr_err("%s: interface is disabled: we cannot track "
+ "link speed / duplex setting\n", dev->name);
+ return -EBUSY;
+ }
+ cmd->transceiver = XCVR_INTERNAL;
+ spin_lock_irq(&priv->lock);
+ rc = phy_ethtool_gset(phy, cmd);
+ spin_unlock_irq(&priv->lock);
+ return rc;
+}
+
+int stmmac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+ struct phy_device *phy = priv->phydev;
+ int rc;
+
+ spin_lock(&priv->lock);
+ rc = phy_ethtool_sset(phy, cmd);
+ spin_unlock(&priv->lock);
+
+ return rc;
+}
+
+u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+ return priv->msg_enable;
+}
+
+void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+ priv->msg_enable = level;
+
+}
+
+int stmmac_check_if_running(struct net_device *dev)
+{
+ if (!netif_running(dev))
+ return -EBUSY;
+ return 0;
+}
+
+int stmmac_ethtool_get_regs_len(struct net_device *dev)
+{
+ return REG_SPACE_SIZE;
+}
+
+void stmmac_ethtool_gregs(struct net_device *dev,
+ struct ethtool_regs *regs, void *space)
+{
+ int i;
+ u32 *reg_space = (u32 *) space;
+
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ memset(reg_space, 0x0, REG_SPACE_SIZE);
+
+ if (!priv->is_gmac) {
+ /* MAC registers */
+ for (i = 0; i < 12; i++)
+ reg_space[i] = readl(dev->base_addr + (i * 4));
+ /* DMA registers */
+ for (i = 0; i < 9; i++)
+ reg_space[i + 12] =
+ readl(dev->base_addr + (DMA_BUS_MODE + (i * 4)));
+ reg_space[22] = readl(dev->base_addr + DMA_CUR_TX_BUF_ADDR);
+ reg_space[23] = readl(dev->base_addr + DMA_CUR_RX_BUF_ADDR);
+ } else {
+ /* MAC registers */
+ for (i = 0; i < 55; i++)
+ reg_space[i] = readl(dev->base_addr + (i * 4));
+ /* DMA registers */
+ for (i = 0; i < 22; i++)
+ reg_space[i + 55] =
+ readl(dev->base_addr + (DMA_BUS_MODE + (i * 4)));
+ }
+
+ return;
+}
+
+int stmmac_ethtool_set_tx_csum(struct net_device *netdev, u32 data)
+{
+ if (data)
+ netdev->features |= NETIF_F_HW_CSUM;
+ else
+ netdev->features &= ~NETIF_F_HW_CSUM;
+
+ return 0;
+}
+
+u32 stmmac_ethtool_get_rx_csum(struct net_device *dev)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ return priv->rx_csum;
+}
+
+static void
+stmmac_get_pauseparam(struct net_device *netdev,
+ struct ethtool_pauseparam *pause)
+{
+ struct stmmac_priv *priv = netdev_priv(netdev);
+
+ spin_lock(&priv->lock);
+
+ pause->rx_pause = 0;
+ pause->tx_pause = 0;
+ pause->autoneg = priv->phydev->autoneg;
+
+ if (priv->flow_ctrl & FLOW_RX)
+ pause->rx_pause = 1;
+ if (priv->flow_ctrl & FLOW_TX)
+ pause->tx_pause = 1;
+
+ spin_unlock(&priv->lock);
+ return;
+}
+
+static int
+stmmac_set_pauseparam(struct net_device *netdev,
+ struct ethtool_pauseparam *pause)
+{
+ struct stmmac_priv *priv = netdev_priv(netdev);
+ struct phy_device *phy = priv->phydev;
+ int new_pause = FLOW_OFF;
+ int ret = 0;
+
+ spin_lock(&priv->lock);
+
+ if (pause->rx_pause)
+ new_pause |= FLOW_RX;
+ if (pause->tx_pause)
+ new_pause |= FLOW_TX;
+
+ priv->flow_ctrl = new_pause;
+
+ if (phy->autoneg) {
+ if (netif_running(netdev)) {
+ struct ethtool_cmd cmd;
+ /* auto-negotiation automatically restarted */
+ cmd.cmd = ETHTOOL_NWAY_RST;
+ cmd.supported = phy->supported;
+ cmd.advertising = phy->advertising;
+ cmd.autoneg = phy->autoneg;
+ cmd.speed = phy->speed;
+ cmd.duplex = phy->duplex;
+ cmd.phy_address = phy->addr;
+ ret = phy_ethtool_sset(phy, &cmd);
+ }
+ } else {
+ unsigned long ioaddr = netdev->base_addr;
+ priv->mac_type->ops->flow_ctrl(ioaddr, phy->duplex,
+ priv->flow_ctrl, priv->pause);
+ }
+ spin_unlock(&priv->lock);
+ return ret;
+}
+
+static void stmmac_get_ethtool_stats(struct net_device *dev,
+ struct ethtool_stats *dummy, u64 *data)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+ unsigned long ioaddr = dev->base_addr;
+ int i;
+
+ /* Update HW stats if supported */
+ priv->mac_type->ops->dma_diagnostic_fr(&dev->stats, &priv->xstats,
+ ioaddr);
+
+ for (i = 0; i < STMMAC_STATS_LEN; i++) {
+ char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
+ data[i] = (stmmac_gstrings_stats[i].sizeof_stat ==
+ sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
+ }
+
+ return;
+}
+
+static int stmmac_get_sset_count(struct net_device *netdev, int sset)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ return STMMAC_STATS_LEN;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+ int i;
+ u8 *p = data;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ for (i = 0; i < STMMAC_STATS_LEN; i++) {
+ memcpy(p, stmmac_gstrings_stats[i].stat_string,
+ ETH_GSTRING_LEN);
+ p += ETH_GSTRING_LEN;
+ }
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+ return;
+}
+
+/* Currently only support WOL through Magic packet. */
+static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ spin_lock_irq(&priv->lock);
+ if (priv->wolenabled == PMT_SUPPORTED) {
+ wol->supported = WAKE_MAGIC;
+ wol->wolopts = priv->wolopts;
+ }
+ spin_unlock_irq(&priv->lock);
+}
+
+static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+ u32 support = WAKE_MAGIC;
+
+ if (priv->wolenabled == PMT_NOT_SUPPORTED)
+ return -EINVAL;
+
+ if (wol->wolopts & ~support)
+ return -EINVAL;
+
+ if (wol->wolopts == 0)
+ device_set_wakeup_enable(priv->device, 0);
+ else
+ device_set_wakeup_enable(priv->device, 1);
+
+ spin_lock_irq(&priv->lock);
+ priv->wolopts = wol->wolopts;
+ spin_unlock_irq(&priv->lock);
+
+ return 0;
+}
+
+static struct ethtool_ops stmmac_ethtool_ops = {
+ .begin = stmmac_check_if_running,
+ .get_drvinfo = stmmac_ethtool_getdrvinfo,
+ .get_settings = stmmac_ethtool_getsettings,
+ .set_settings = stmmac_ethtool_setsettings,
+ .get_msglevel = stmmac_ethtool_getmsglevel,
+ .set_msglevel = stmmac_ethtool_setmsglevel,
+ .get_regs = stmmac_ethtool_gregs,
+ .get_regs_len = stmmac_ethtool_get_regs_len,
+ .get_link = ethtool_op_get_link,
+ .get_rx_csum = stmmac_ethtool_get_rx_csum,
+ .get_tx_csum = ethtool_op_get_tx_csum,
+ .set_tx_csum = stmmac_ethtool_set_tx_csum,
+ .get_sg = ethtool_op_get_sg,
+ .set_sg = ethtool_op_set_sg,
+ .get_pauseparam = stmmac_get_pauseparam,
+ .set_pauseparam = stmmac_set_pauseparam,
+ .get_ethtool_stats = stmmac_get_ethtool_stats,
+ .get_strings = stmmac_get_strings,
+ .get_wol = stmmac_get_wol,
+ .set_wol = stmmac_set_wol,
+ .get_sset_count = stmmac_get_sset_count,
+#ifdef NETIF_F_TSO
+ .get_tso = ethtool_op_get_tso,
+ .set_tso = ethtool_op_set_tso,
+#endif
+};
+
+void stmmac_set_ethtool_ops(struct net_device *netdev)
+{
+ SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
+}