forked from Minki/linux
a4b770972b
This patch removes from drivers/net/ all the unnecessary
return; statements that precede the last closing brace of
void functions.
It does not remove the returns that are immediately
preceded by a label as gcc doesn't like that.
It also does not remove null void functions with return.
Done via:
$ grep -rP --include=*.[ch] -l "return;\n}" net/ | \
xargs perl -i -e 'local $/ ; while (<>) { s/\n[ \t\n]+return;\n}/\n}/g; print; }'
with some cleanups by hand.
Compile tested x86 allmodconfig only.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
390 lines
9.8 KiB
C
390 lines
9.8 KiB
C
/*******************************************************************************
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STMMAC Ethtool support
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Copyright (C) 2007-2009 STMicroelectronics Ltd
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
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*******************************************************************************/
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#include <linux/etherdevice.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <linux/phy.h>
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#include "stmmac.h"
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#include "dwmac_dma.h"
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#define REG_SPACE_SIZE 0x1054
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#define MAC100_ETHTOOL_NAME "st_mac100"
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#define GMAC_ETHTOOL_NAME "st_gmac"
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struct stmmac_stats {
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char stat_string[ETH_GSTRING_LEN];
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int sizeof_stat;
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int stat_offset;
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};
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#define STMMAC_STAT(m) \
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{ #m, FIELD_SIZEOF(struct stmmac_extra_stats, m), \
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offsetof(struct stmmac_priv, xstats.m)}
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static const struct stmmac_stats stmmac_gstrings_stats[] = {
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STMMAC_STAT(tx_underflow),
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STMMAC_STAT(tx_carrier),
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STMMAC_STAT(tx_losscarrier),
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STMMAC_STAT(tx_heartbeat),
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STMMAC_STAT(tx_deferred),
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STMMAC_STAT(tx_vlan),
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STMMAC_STAT(rx_vlan),
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STMMAC_STAT(tx_jabber),
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STMMAC_STAT(tx_frame_flushed),
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STMMAC_STAT(tx_payload_error),
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STMMAC_STAT(tx_ip_header_error),
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STMMAC_STAT(rx_desc),
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STMMAC_STAT(rx_partial),
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STMMAC_STAT(rx_runt),
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STMMAC_STAT(rx_toolong),
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STMMAC_STAT(rx_collision),
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STMMAC_STAT(rx_crc),
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STMMAC_STAT(rx_length),
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STMMAC_STAT(rx_mii),
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STMMAC_STAT(rx_multicast),
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STMMAC_STAT(rx_gmac_overflow),
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STMMAC_STAT(rx_watchdog),
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STMMAC_STAT(da_rx_filter_fail),
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STMMAC_STAT(sa_rx_filter_fail),
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STMMAC_STAT(rx_missed_cntr),
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STMMAC_STAT(rx_overflow_cntr),
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STMMAC_STAT(tx_undeflow_irq),
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STMMAC_STAT(tx_process_stopped_irq),
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STMMAC_STAT(tx_jabber_irq),
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STMMAC_STAT(rx_overflow_irq),
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STMMAC_STAT(rx_buf_unav_irq),
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STMMAC_STAT(rx_process_stopped_irq),
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STMMAC_STAT(rx_watchdog_irq),
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STMMAC_STAT(tx_early_irq),
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STMMAC_STAT(fatal_bus_error_irq),
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STMMAC_STAT(threshold),
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STMMAC_STAT(tx_pkt_n),
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STMMAC_STAT(rx_pkt_n),
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STMMAC_STAT(poll_n),
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STMMAC_STAT(sched_timer_n),
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STMMAC_STAT(normal_irq_n),
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};
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#define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
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void stmmac_ethtool_getdrvinfo(struct net_device *dev,
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struct ethtool_drvinfo *info)
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{
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struct stmmac_priv *priv = netdev_priv(dev);
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if (!priv->is_gmac)
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strcpy(info->driver, MAC100_ETHTOOL_NAME);
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else
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strcpy(info->driver, GMAC_ETHTOOL_NAME);
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strcpy(info->version, DRV_MODULE_VERSION);
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info->fw_version[0] = '\0';
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info->n_stats = STMMAC_STATS_LEN;
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}
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int stmmac_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
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{
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struct stmmac_priv *priv = netdev_priv(dev);
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struct phy_device *phy = priv->phydev;
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int rc;
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if (phy == NULL) {
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pr_err("%s: %s: PHY is not registered\n",
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__func__, dev->name);
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return -ENODEV;
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}
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if (!netif_running(dev)) {
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pr_err("%s: interface is disabled: we cannot track "
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"link speed / duplex setting\n", dev->name);
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return -EBUSY;
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}
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cmd->transceiver = XCVR_INTERNAL;
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spin_lock_irq(&priv->lock);
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rc = phy_ethtool_gset(phy, cmd);
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spin_unlock_irq(&priv->lock);
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return rc;
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}
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int stmmac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
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{
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struct stmmac_priv *priv = netdev_priv(dev);
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struct phy_device *phy = priv->phydev;
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int rc;
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spin_lock(&priv->lock);
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rc = phy_ethtool_sset(phy, cmd);
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spin_unlock(&priv->lock);
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return rc;
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}
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u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
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{
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struct stmmac_priv *priv = netdev_priv(dev);
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return priv->msg_enable;
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}
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void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
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{
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struct stmmac_priv *priv = netdev_priv(dev);
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priv->msg_enable = level;
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}
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int stmmac_check_if_running(struct net_device *dev)
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{
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if (!netif_running(dev))
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return -EBUSY;
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return 0;
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}
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int stmmac_ethtool_get_regs_len(struct net_device *dev)
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{
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return REG_SPACE_SIZE;
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}
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void stmmac_ethtool_gregs(struct net_device *dev,
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struct ethtool_regs *regs, void *space)
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{
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int i;
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u32 *reg_space = (u32 *) space;
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struct stmmac_priv *priv = netdev_priv(dev);
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memset(reg_space, 0x0, REG_SPACE_SIZE);
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if (!priv->is_gmac) {
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/* MAC registers */
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for (i = 0; i < 12; i++)
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reg_space[i] = readl(dev->base_addr + (i * 4));
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/* DMA registers */
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for (i = 0; i < 9; i++)
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reg_space[i + 12] =
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readl(dev->base_addr + (DMA_BUS_MODE + (i * 4)));
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reg_space[22] = readl(dev->base_addr + DMA_CUR_TX_BUF_ADDR);
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reg_space[23] = readl(dev->base_addr + DMA_CUR_RX_BUF_ADDR);
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} else {
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/* MAC registers */
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for (i = 0; i < 55; i++)
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reg_space[i] = readl(dev->base_addr + (i * 4));
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/* DMA registers */
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for (i = 0; i < 22; i++)
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reg_space[i + 55] =
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readl(dev->base_addr + (DMA_BUS_MODE + (i * 4)));
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}
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}
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int stmmac_ethtool_set_tx_csum(struct net_device *netdev, u32 data)
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{
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if (data)
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netdev->features |= NETIF_F_HW_CSUM;
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else
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netdev->features &= ~NETIF_F_HW_CSUM;
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return 0;
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}
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u32 stmmac_ethtool_get_rx_csum(struct net_device *dev)
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{
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struct stmmac_priv *priv = netdev_priv(dev);
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return priv->rx_csum;
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}
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static void
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stmmac_get_pauseparam(struct net_device *netdev,
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struct ethtool_pauseparam *pause)
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{
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struct stmmac_priv *priv = netdev_priv(netdev);
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spin_lock(&priv->lock);
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pause->rx_pause = 0;
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pause->tx_pause = 0;
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pause->autoneg = priv->phydev->autoneg;
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if (priv->flow_ctrl & FLOW_RX)
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pause->rx_pause = 1;
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if (priv->flow_ctrl & FLOW_TX)
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pause->tx_pause = 1;
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spin_unlock(&priv->lock);
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}
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static int
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stmmac_set_pauseparam(struct net_device *netdev,
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struct ethtool_pauseparam *pause)
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{
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struct stmmac_priv *priv = netdev_priv(netdev);
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struct phy_device *phy = priv->phydev;
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int new_pause = FLOW_OFF;
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int ret = 0;
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spin_lock(&priv->lock);
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if (pause->rx_pause)
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new_pause |= FLOW_RX;
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if (pause->tx_pause)
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new_pause |= FLOW_TX;
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priv->flow_ctrl = new_pause;
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if (phy->autoneg) {
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if (netif_running(netdev)) {
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struct ethtool_cmd cmd;
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/* auto-negotiation automatically restarted */
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cmd.cmd = ETHTOOL_NWAY_RST;
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cmd.supported = phy->supported;
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cmd.advertising = phy->advertising;
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cmd.autoneg = phy->autoneg;
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cmd.speed = phy->speed;
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cmd.duplex = phy->duplex;
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cmd.phy_address = phy->addr;
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ret = phy_ethtool_sset(phy, &cmd);
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}
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} else {
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unsigned long ioaddr = netdev->base_addr;
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priv->hw->mac->flow_ctrl(ioaddr, phy->duplex,
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priv->flow_ctrl, priv->pause);
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}
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spin_unlock(&priv->lock);
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return ret;
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}
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static void stmmac_get_ethtool_stats(struct net_device *dev,
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struct ethtool_stats *dummy, u64 *data)
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{
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struct stmmac_priv *priv = netdev_priv(dev);
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unsigned long ioaddr = dev->base_addr;
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int i;
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/* Update HW stats if supported */
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priv->hw->dma->dma_diagnostic_fr(&dev->stats, (void *) &priv->xstats,
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ioaddr);
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for (i = 0; i < STMMAC_STATS_LEN; i++) {
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char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
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data[i] = (stmmac_gstrings_stats[i].sizeof_stat ==
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sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
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}
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}
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static int stmmac_get_sset_count(struct net_device *netdev, int sset)
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{
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switch (sset) {
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case ETH_SS_STATS:
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return STMMAC_STATS_LEN;
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default:
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return -EOPNOTSUPP;
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}
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}
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static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
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{
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int i;
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u8 *p = data;
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switch (stringset) {
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case ETH_SS_STATS:
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for (i = 0; i < STMMAC_STATS_LEN; i++) {
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memcpy(p, stmmac_gstrings_stats[i].stat_string,
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ETH_GSTRING_LEN);
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p += ETH_GSTRING_LEN;
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}
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break;
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default:
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WARN_ON(1);
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break;
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}
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}
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/* Currently only support WOL through Magic packet. */
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static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
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{
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struct stmmac_priv *priv = netdev_priv(dev);
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spin_lock_irq(&priv->lock);
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if (priv->wolenabled == PMT_SUPPORTED) {
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wol->supported = WAKE_MAGIC;
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wol->wolopts = priv->wolopts;
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}
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spin_unlock_irq(&priv->lock);
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}
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static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
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{
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struct stmmac_priv *priv = netdev_priv(dev);
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u32 support = WAKE_MAGIC;
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if (priv->wolenabled == PMT_NOT_SUPPORTED)
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return -EINVAL;
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if (wol->wolopts & ~support)
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return -EINVAL;
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if (wol->wolopts == 0)
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device_set_wakeup_enable(priv->device, 0);
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else
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device_set_wakeup_enable(priv->device, 1);
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spin_lock_irq(&priv->lock);
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priv->wolopts = wol->wolopts;
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spin_unlock_irq(&priv->lock);
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return 0;
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}
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static struct ethtool_ops stmmac_ethtool_ops = {
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.begin = stmmac_check_if_running,
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.get_drvinfo = stmmac_ethtool_getdrvinfo,
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.get_settings = stmmac_ethtool_getsettings,
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.set_settings = stmmac_ethtool_setsettings,
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.get_msglevel = stmmac_ethtool_getmsglevel,
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.set_msglevel = stmmac_ethtool_setmsglevel,
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.get_regs = stmmac_ethtool_gregs,
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.get_regs_len = stmmac_ethtool_get_regs_len,
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.get_link = ethtool_op_get_link,
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.get_rx_csum = stmmac_ethtool_get_rx_csum,
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.get_tx_csum = ethtool_op_get_tx_csum,
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.set_tx_csum = stmmac_ethtool_set_tx_csum,
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.get_sg = ethtool_op_get_sg,
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.set_sg = ethtool_op_set_sg,
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.get_pauseparam = stmmac_get_pauseparam,
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.set_pauseparam = stmmac_set_pauseparam,
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.get_ethtool_stats = stmmac_get_ethtool_stats,
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.get_strings = stmmac_get_strings,
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.get_wol = stmmac_get_wol,
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.set_wol = stmmac_set_wol,
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.get_sset_count = stmmac_get_sset_count,
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#ifdef NETIF_F_TSO
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.get_tso = ethtool_op_get_tso,
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.set_tso = ethtool_op_set_tso,
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#endif
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};
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void stmmac_set_ethtool_ops(struct net_device *netdev)
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{
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SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
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}
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