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// SPDX-License-Identifier: GPL-2.0-only
/*
* FUJITSU Extended Socket Network Device driver
* Copyright (c) 2015 FUJITSU LIMITED
*/
/* ethtool support for fjes */
#include <linux/vmalloc.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/platform_device.h>
#include "fjes.h"
struct fjes_stats {
char stat_string[ETH_GSTRING_LEN];
int sizeof_stat;
int stat_offset;
};
#define FJES_STAT(name, stat) { \
.stat_string = name, \
.sizeof_stat = FIELD_SIZEOF(struct fjes_adapter, stat), \
.stat_offset = offsetof(struct fjes_adapter, stat) \
}
static const struct fjes_stats fjes_gstrings_stats[] = {
FJES_STAT("rx_packets", stats64.rx_packets),
FJES_STAT("tx_packets", stats64.tx_packets),
FJES_STAT("rx_bytes", stats64.rx_bytes),
FJES_STAT("tx_bytes", stats64.rx_bytes),
FJES_STAT("rx_dropped", stats64.rx_dropped),
FJES_STAT("tx_dropped", stats64.tx_dropped),
};
#define FJES_EP_STATS_LEN 14
#define FJES_STATS_LEN \
(ARRAY_SIZE(fjes_gstrings_stats) + \
((&((struct fjes_adapter *)netdev_priv(netdev))->hw)->max_epid - 1) * \
FJES_EP_STATS_LEN)
static void fjes_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, u64 *data)
{
struct fjes_adapter *adapter = netdev_priv(netdev);
struct fjes_hw *hw = &adapter->hw;
int epidx;
char *p;
int i;
for (i = 0; i < ARRAY_SIZE(fjes_gstrings_stats); i++) {
p = (char *)adapter + fjes_gstrings_stats[i].stat_offset;
data[i] = (fjes_gstrings_stats[i].sizeof_stat == sizeof(u64))
? *(u64 *)p : *(u32 *)p;
}
for (epidx = 0; epidx < hw->max_epid; epidx++) {
if (epidx == hw->my_epid)
continue;
data[i++] = hw->ep_shm_info[epidx].ep_stats
.com_regist_buf_exec;
data[i++] = hw->ep_shm_info[epidx].ep_stats
.com_unregist_buf_exec;
data[i++] = hw->ep_shm_info[epidx].ep_stats.send_intr_rx;
data[i++] = hw->ep_shm_info[epidx].ep_stats.send_intr_unshare;
data[i++] = hw->ep_shm_info[epidx].ep_stats
.send_intr_zoneupdate;
data[i++] = hw->ep_shm_info[epidx].ep_stats.recv_intr_rx;
data[i++] = hw->ep_shm_info[epidx].ep_stats.recv_intr_unshare;
data[i++] = hw->ep_shm_info[epidx].ep_stats.recv_intr_stop;
data[i++] = hw->ep_shm_info[epidx].ep_stats
.recv_intr_zoneupdate;
data[i++] = hw->ep_shm_info[epidx].ep_stats.tx_buffer_full;
data[i++] = hw->ep_shm_info[epidx].ep_stats
.tx_dropped_not_shared;
data[i++] = hw->ep_shm_info[epidx].ep_stats
.tx_dropped_ver_mismatch;
data[i++] = hw->ep_shm_info[epidx].ep_stats
.tx_dropped_buf_size_mismatch;
data[i++] = hw->ep_shm_info[epidx].ep_stats
.tx_dropped_vlanid_mismatch;
}
}
static void fjes_get_strings(struct net_device *netdev,
u32 stringset, u8 *data)
{
struct fjes_adapter *adapter = netdev_priv(netdev);
struct fjes_hw *hw = &adapter->hw;
u8 *p = data;
int i;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < ARRAY_SIZE(fjes_gstrings_stats); i++) {
memcpy(p, fjes_gstrings_stats[i].stat_string,
ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
for (i = 0; i < hw->max_epid; i++) {
if (i == hw->my_epid)
continue;
sprintf(p, "ep%u_com_regist_buf_exec", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_com_unregist_buf_exec", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_send_intr_rx", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_send_intr_unshare", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_send_intr_zoneupdate", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_recv_intr_rx", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_recv_intr_unshare", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_recv_intr_stop", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_recv_intr_zoneupdate", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_tx_buffer_full", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_tx_dropped_not_shared", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_tx_dropped_ver_mismatch", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_tx_dropped_buf_size_mismatch", i);
p += ETH_GSTRING_LEN;
sprintf(p, "ep%u_tx_dropped_vlanid_mismatch", i);
p += ETH_GSTRING_LEN;
}
break;
}
}
static int fjes_get_sset_count(struct net_device *netdev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return FJES_STATS_LEN;
default:
return -EOPNOTSUPP;
}
}
static void fjes_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
struct fjes_adapter *adapter = netdev_priv(netdev);
struct platform_device *plat_dev;
plat_dev = adapter->plat_dev;
strlcpy(drvinfo->driver, fjes_driver_name, sizeof(drvinfo->driver));
strlcpy(drvinfo->version, fjes_driver_version,
sizeof(drvinfo->version));
strlcpy(drvinfo->fw_version, "none", sizeof(drvinfo->fw_version));
snprintf(drvinfo->bus_info, sizeof(drvinfo->bus_info),
"platform:%s", plat_dev->name);
}
static int fjes_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *ecmd)
{
ethtool_link_ksettings_zero_link_mode(ecmd, supported);
ethtool_link_ksettings_zero_link_mode(ecmd, advertising);
ecmd->base.duplex = DUPLEX_FULL;
ecmd->base.autoneg = AUTONEG_DISABLE;
ecmd->base.port = PORT_NONE;
ecmd->base.speed = 20000; /* 20Gb/s */
return 0;
}
static int fjes_get_regs_len(struct net_device *netdev)
{
#define FJES_REGS_LEN 37
return FJES_REGS_LEN * sizeof(u32);
}
static void fjes_get_regs(struct net_device *netdev,
struct ethtool_regs *regs, void *p)
{
struct fjes_adapter *adapter = netdev_priv(netdev);
struct fjes_hw *hw = &adapter->hw;
u32 *regs_buff = p;
memset(p, 0, FJES_REGS_LEN * sizeof(u32));
regs->version = 1;
/* Information registers */
regs_buff[0] = rd32(XSCT_OWNER_EPID);
regs_buff[1] = rd32(XSCT_MAX_EP);
/* Device Control registers */
regs_buff[4] = rd32(XSCT_DCTL);
/* Command Control registers */
regs_buff[8] = rd32(XSCT_CR);
regs_buff[9] = rd32(XSCT_CS);
regs_buff[10] = rd32(XSCT_SHSTSAL);
regs_buff[11] = rd32(XSCT_SHSTSAH);
regs_buff[13] = rd32(XSCT_REQBL);
regs_buff[14] = rd32(XSCT_REQBAL);
regs_buff[15] = rd32(XSCT_REQBAH);
regs_buff[17] = rd32(XSCT_RESPBL);
regs_buff[18] = rd32(XSCT_RESPBAL);
regs_buff[19] = rd32(XSCT_RESPBAH);
/* Interrupt Control registers */
regs_buff[32] = rd32(XSCT_IS);
regs_buff[33] = rd32(XSCT_IMS);
regs_buff[34] = rd32(XSCT_IMC);
regs_buff[35] = rd32(XSCT_IG);
regs_buff[36] = rd32(XSCT_ICTL);
}
static int fjes_set_dump(struct net_device *netdev, struct ethtool_dump *dump)
{
struct fjes_adapter *adapter = netdev_priv(netdev);
struct fjes_hw *hw = &adapter->hw;
int ret = 0;
if (dump->flag) {
if (hw->debug_mode)
return -EPERM;
hw->debug_mode = dump->flag;
/* enable debug mode */
mutex_lock(&hw->hw_info.lock);
ret = fjes_hw_start_debug(hw);
mutex_unlock(&hw->hw_info.lock);
if (ret)
hw->debug_mode = 0;
} else {
if (!hw->debug_mode)
return -EPERM;
/* disable debug mode */
mutex_lock(&hw->hw_info.lock);
ret = fjes_hw_stop_debug(hw);
mutex_unlock(&hw->hw_info.lock);
}
return ret;
}
static int fjes_get_dump_flag(struct net_device *netdev,
struct ethtool_dump *dump)
{
struct fjes_adapter *adapter = netdev_priv(netdev);
struct fjes_hw *hw = &adapter->hw;
dump->len = hw->hw_info.trace_size;
dump->version = 1;
dump->flag = hw->debug_mode;
return 0;
}
static int fjes_get_dump_data(struct net_device *netdev,
struct ethtool_dump *dump, void *buf)
{
struct fjes_adapter *adapter = netdev_priv(netdev);
struct fjes_hw *hw = &adapter->hw;
int ret = 0;
if (hw->hw_info.trace)
memcpy(buf, hw->hw_info.trace, hw->hw_info.trace_size);
else
ret = -EPERM;
return ret;
}
static const struct ethtool_ops fjes_ethtool_ops = {
.get_drvinfo = fjes_get_drvinfo,
.get_ethtool_stats = fjes_get_ethtool_stats,
.get_strings = fjes_get_strings,
.get_sset_count = fjes_get_sset_count,
.get_regs = fjes_get_regs,
.get_regs_len = fjes_get_regs_len,
.set_dump = fjes_set_dump,
.get_dump_flag = fjes_get_dump_flag,
.get_dump_data = fjes_get_dump_data,
.get_link_ksettings = fjes_get_link_ksettings,
};
void fjes_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &fjes_ethtool_ops;
}
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