288 lines
6.4 KiB
C
288 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (c) 2016, The Linux Foundation. All rights reserved.
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*/
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#include <linux/ethtool.h>
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#include <linux/phy.h>
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#include "emac.h"
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static const char * const emac_ethtool_stat_strings[] = {
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"rx_ok",
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"rx_bcast",
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"rx_mcast",
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"rx_pause",
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"rx_ctrl",
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"rx_fcs_err",
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"rx_len_err",
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"rx_byte_cnt",
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"rx_runt",
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"rx_frag",
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"rx_sz_64",
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"rx_sz_65_127",
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"rx_sz_128_255",
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"rx_sz_256_511",
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"rx_sz_512_1023",
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"rx_sz_1024_1518",
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"rx_sz_1519_max",
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"rx_sz_ov",
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"rx_rxf_ov",
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"rx_align_err",
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"rx_bcast_byte_cnt",
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"rx_mcast_byte_cnt",
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"rx_err_addr",
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"rx_crc_align",
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"rx_jabbers",
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"tx_ok",
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"tx_bcast",
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"tx_mcast",
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"tx_pause",
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"tx_exc_defer",
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"tx_ctrl",
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"tx_defer",
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"tx_byte_cnt",
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"tx_sz_64",
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"tx_sz_65_127",
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"tx_sz_128_255",
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"tx_sz_256_511",
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"tx_sz_512_1023",
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"tx_sz_1024_1518",
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"tx_sz_1519_max",
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"tx_1_col",
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"tx_2_col",
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"tx_late_col",
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"tx_abort_col",
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"tx_underrun",
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"tx_rd_eop",
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"tx_len_err",
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"tx_trunc",
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"tx_bcast_byte",
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"tx_mcast_byte",
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"tx_col",
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};
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#define EMAC_STATS_LEN ARRAY_SIZE(emac_ethtool_stat_strings)
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static u32 emac_get_msglevel(struct net_device *netdev)
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{
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struct emac_adapter *adpt = netdev_priv(netdev);
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return adpt->msg_enable;
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}
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static void emac_set_msglevel(struct net_device *netdev, u32 data)
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{
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struct emac_adapter *adpt = netdev_priv(netdev);
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adpt->msg_enable = data;
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}
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static int emac_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_PRIV_FLAGS:
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return 1;
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case ETH_SS_STATS:
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return EMAC_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 emac_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
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{
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unsigned int i;
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switch (stringset) {
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case ETH_SS_PRIV_FLAGS:
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strcpy(data, "single-pause-mode");
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break;
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case ETH_SS_STATS:
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for (i = 0; i < EMAC_STATS_LEN; i++) {
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strscpy(data, emac_ethtool_stat_strings[i],
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ETH_GSTRING_LEN);
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data += ETH_GSTRING_LEN;
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}
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break;
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}
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}
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static void emac_get_ethtool_stats(struct net_device *netdev,
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struct ethtool_stats *stats,
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u64 *data)
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{
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struct emac_adapter *adpt = netdev_priv(netdev);
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spin_lock(&adpt->stats.lock);
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emac_update_hw_stats(adpt);
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memcpy(data, &adpt->stats, EMAC_STATS_LEN * sizeof(u64));
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spin_unlock(&adpt->stats.lock);
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}
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static int emac_nway_reset(struct net_device *netdev)
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{
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struct phy_device *phydev = netdev->phydev;
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if (!phydev)
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return -ENODEV;
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return genphy_restart_aneg(phydev);
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}
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static void emac_get_ringparam(struct net_device *netdev,
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struct ethtool_ringparam *ring,
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struct kernel_ethtool_ringparam *kernel_ring,
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struct netlink_ext_ack *extack)
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{
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struct emac_adapter *adpt = netdev_priv(netdev);
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ring->rx_max_pending = EMAC_MAX_RX_DESCS;
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ring->tx_max_pending = EMAC_MAX_TX_DESCS;
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ring->rx_pending = adpt->rx_desc_cnt;
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ring->tx_pending = adpt->tx_desc_cnt;
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}
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static int emac_set_ringparam(struct net_device *netdev,
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struct ethtool_ringparam *ring,
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struct kernel_ethtool_ringparam *kernel_ring,
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struct netlink_ext_ack *extack)
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{
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struct emac_adapter *adpt = netdev_priv(netdev);
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/* We don't have separate queues/rings for small/large frames, so
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* reject any attempt to specify those values separately.
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*/
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if (ring->rx_mini_pending || ring->rx_jumbo_pending)
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return -EINVAL;
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adpt->tx_desc_cnt =
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clamp_val(ring->tx_pending, EMAC_MIN_TX_DESCS, EMAC_MAX_TX_DESCS);
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adpt->rx_desc_cnt =
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clamp_val(ring->rx_pending, EMAC_MIN_RX_DESCS, EMAC_MAX_RX_DESCS);
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if (netif_running(netdev))
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return emac_reinit_locked(adpt);
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return 0;
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}
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static void emac_get_pauseparam(struct net_device *netdev,
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struct ethtool_pauseparam *pause)
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{
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struct emac_adapter *adpt = netdev_priv(netdev);
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pause->autoneg = adpt->automatic ? AUTONEG_ENABLE : AUTONEG_DISABLE;
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pause->rx_pause = adpt->rx_flow_control ? 1 : 0;
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pause->tx_pause = adpt->tx_flow_control ? 1 : 0;
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}
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static int emac_set_pauseparam(struct net_device *netdev,
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struct ethtool_pauseparam *pause)
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{
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struct emac_adapter *adpt = netdev_priv(netdev);
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adpt->automatic = pause->autoneg == AUTONEG_ENABLE;
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adpt->rx_flow_control = pause->rx_pause != 0;
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adpt->tx_flow_control = pause->tx_pause != 0;
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if (netif_running(netdev))
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return emac_reinit_locked(adpt);
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return 0;
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}
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/* Selected registers that might want to track during runtime. */
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static const u16 emac_regs[] = {
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EMAC_DMA_MAS_CTRL,
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EMAC_MAC_CTRL,
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EMAC_TXQ_CTRL_0,
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EMAC_RXQ_CTRL_0,
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EMAC_DMA_CTRL,
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EMAC_INT_MASK,
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EMAC_AXI_MAST_CTRL,
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EMAC_CORE_HW_VERSION,
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EMAC_MISC_CTRL,
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};
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/* Every time emac_regs[] above is changed, increase this version number. */
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#define EMAC_REGS_VERSION 0
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#define EMAC_MAX_REG_SIZE ARRAY_SIZE(emac_regs)
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static void emac_get_regs(struct net_device *netdev,
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struct ethtool_regs *regs, void *buff)
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{
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struct emac_adapter *adpt = netdev_priv(netdev);
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u32 *val = buff;
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unsigned int i;
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regs->version = EMAC_REGS_VERSION;
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regs->len = EMAC_MAX_REG_SIZE * sizeof(u32);
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for (i = 0; i < EMAC_MAX_REG_SIZE; i++)
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val[i] = readl(adpt->base + emac_regs[i]);
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}
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static int emac_get_regs_len(struct net_device *netdev)
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{
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return EMAC_MAX_REG_SIZE * sizeof(u32);
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}
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#define EMAC_PRIV_ENABLE_SINGLE_PAUSE BIT(0)
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static int emac_set_priv_flags(struct net_device *netdev, u32 flags)
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{
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struct emac_adapter *adpt = netdev_priv(netdev);
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adpt->single_pause_mode = !!(flags & EMAC_PRIV_ENABLE_SINGLE_PAUSE);
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if (netif_running(netdev))
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return emac_reinit_locked(adpt);
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return 0;
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}
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static u32 emac_get_priv_flags(struct net_device *netdev)
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{
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struct emac_adapter *adpt = netdev_priv(netdev);
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return adpt->single_pause_mode ? EMAC_PRIV_ENABLE_SINGLE_PAUSE : 0;
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}
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static const struct ethtool_ops emac_ethtool_ops = {
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.get_link_ksettings = phy_ethtool_get_link_ksettings,
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.set_link_ksettings = phy_ethtool_set_link_ksettings,
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.get_msglevel = emac_get_msglevel,
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.set_msglevel = emac_set_msglevel,
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.get_sset_count = emac_get_sset_count,
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.get_strings = emac_get_strings,
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.get_ethtool_stats = emac_get_ethtool_stats,
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.get_ringparam = emac_get_ringparam,
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.set_ringparam = emac_set_ringparam,
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.get_pauseparam = emac_get_pauseparam,
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.set_pauseparam = emac_set_pauseparam,
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.nway_reset = emac_nway_reset,
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.get_link = ethtool_op_get_link,
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.get_regs_len = emac_get_regs_len,
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.get_regs = emac_get_regs,
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.set_priv_flags = emac_set_priv_flags,
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.get_priv_flags = emac_get_priv_flags,
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};
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void emac_set_ethtool_ops(struct net_device *netdev)
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{
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netdev->ethtool_ops = &emac_ethtool_ops;
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}
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