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