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linux/drivers/net/ethernet/freescale/ucc_geth_ethtool.c
Wolfram Sang f029c781dd net: ethernet: move from strlcpy with unused retval to strscpy 
Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.

Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Petr Machata <petrm@nvidia.com> # For drivers/net/ethernet/mellanox/mlxsw
Acked-by: Geoff Levand <geoff@infradead.org> # For ps3_gelic_net and spider_net_ethtool
Acked-by: Tom Lendacky <thomas.lendacky@amd.com> # For drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c
Acked-by: Marcin Wojtas <mw@semihalf.com> # For drivers/net/ethernet/marvell/mvpp2
Reviewed-by: Leon Romanovsky <leonro@nvidia.com> # For drivers/net/ethernet/mellanox/mlx{4|5}
Reviewed-by: Shay Agroskin <shayagr@amazon.com> # For drivers/net/ethernet/amazon/ena
Acked-by: Krzysztof Hałasa <khalasa@piap.pl> # For IXP4xx Ethernet
Link: https://lore.kernel.org/r/20220830201457.7984-3-wsa+renesas@sang-engineering.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-08-31 14:11:26 -07:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2007 Freescale Semiconductor, Inc. All rights reserved.
*
* Description: QE UCC Gigabit Ethernet Ethtool API Set
*
* Author: Li Yang <leoli@freescale.com>
*
* Limitation:
* Can only get/set settings of the first queue.
* Need to re-open the interface manually after changing some parameters.
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/stddef.h>
#include <linux/interrupt.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/phy.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <linux/uaccess.h>
#include <asm/types.h>
#include "ucc_geth.h"
static const char hw_stat_gstrings[][ETH_GSTRING_LEN] = {
"tx-64-frames",
"tx-65-127-frames",
"tx-128-255-frames",
"rx-64-frames",
"rx-65-127-frames",
"rx-128-255-frames",
"tx-bytes-ok",
"tx-pause-frames",
"tx-multicast-frames",
"tx-broadcast-frames",
"rx-frames",
"rx-bytes-ok",
"rx-bytes-all",
"rx-multicast-frames",
"rx-broadcast-frames",
"stats-counter-carry",
"stats-counter-mask",
"rx-dropped-frames",
};
static const char tx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
"tx-single-collision",
"tx-multiple-collision",
"tx-late-collision",
"tx-aborted-frames",
"tx-lost-frames",
"tx-carrier-sense-errors",
"tx-frames-ok",
"tx-excessive-differ-frames",
"tx-256-511-frames",
"tx-512-1023-frames",
"tx-1024-1518-frames",
"tx-jumbo-frames",
};
static const char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
"rx-crc-errors",
"rx-alignment-errors",
"rx-in-range-length-errors",
"rx-out-of-range-length-errors",
"rx-too-long-frames",
"rx-runt",
"rx-very-long-event",
"rx-symbol-errors",
"rx-busy-drop-frames",
"reserved",
"reserved",
"rx-mismatch-drop-frames",
"rx-small-than-64",
"rx-256-511-frames",
"rx-512-1023-frames",
"rx-1024-1518-frames",
"rx-jumbo-frames",
"rx-mac-error-loss",
"rx-pause-frames",
"reserved",
"rx-vlan-removed",
"rx-vlan-replaced",
"rx-vlan-inserted",
"rx-ip-checksum-errors",
};
#define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
#define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
#define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
static int
uec_get_ksettings(struct net_device *netdev, struct ethtool_link_ksettings *cmd)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
struct phy_device *phydev = ugeth->phydev;
if (!phydev)
return -ENODEV;
phy_ethtool_ksettings_get(phydev, cmd);
return 0;
}
static int
uec_set_ksettings(struct net_device *netdev,
const struct ethtool_link_ksettings *cmd)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
struct phy_device *phydev = ugeth->phydev;
if (!phydev)
return -ENODEV;
return phy_ethtool_ksettings_set(phydev, cmd);
}
static void
uec_get_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *pause)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
pause->autoneg = ugeth->phydev->autoneg;
if (ugeth->ug_info->receiveFlowControl)
pause->rx_pause = 1;
if (ugeth->ug_info->transmitFlowControl)
pause->tx_pause = 1;
}
static int
uec_set_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *pause)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
int ret = 0;
ugeth->ug_info->receiveFlowControl = pause->rx_pause;
ugeth->ug_info->transmitFlowControl = pause->tx_pause;
if (ugeth->phydev->autoneg) {
if (netif_running(netdev)) {
/* FIXME: automatically restart */
netdev_info(netdev, "Please re-open the interface\n");
}
} else {
struct ucc_geth_info *ug_info = ugeth->ug_info;
ret = init_flow_control_params(ug_info->aufc,
ug_info->receiveFlowControl,
ug_info->transmitFlowControl,
ug_info->pausePeriod,
ug_info->extensionField,
&ugeth->uccf->uf_regs->upsmr,
&ugeth->ug_regs->uempr,
&ugeth->ug_regs->maccfg1);
}
return ret;
}
static uint32_t
uec_get_msglevel(struct net_device *netdev)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
return ugeth->msg_enable;
}
static void
uec_set_msglevel(struct net_device *netdev, uint32_t data)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
ugeth->msg_enable = data;
}
static int
uec_get_regs_len(struct net_device *netdev)
{
return sizeof(struct ucc_geth);
}
static void
uec_get_regs(struct net_device *netdev,
struct ethtool_regs *regs, void *p)
{
int i;
struct ucc_geth_private *ugeth = netdev_priv(netdev);
u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
u32 *buff = p;
for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
buff[i] = in_be32(&ug_regs[i]);
}
static void
uec_get_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring,
struct kernel_ethtool_ringparam *kernel_ring,
struct netlink_ext_ack *extack)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
struct ucc_geth_info *ug_info = ugeth->ug_info;
int queue = 0;
ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
ring->rx_pending = ug_info->bdRingLenRx[queue];
ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
ring->tx_pending = ug_info->bdRingLenTx[queue];
}
static int
uec_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring,
struct kernel_ethtool_ringparam *kernel_ring,
struct netlink_ext_ack *extack)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
struct ucc_geth_info *ug_info = ugeth->ug_info;
int queue = 0, ret = 0;
if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
netdev_info(netdev, "RxBD ring size must be no smaller than %d\n",
UCC_GETH_RX_BD_RING_SIZE_MIN);
return -EINVAL;
}
if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
netdev_info(netdev, "RxBD ring size must be multiple of %d\n",
UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
return -EINVAL;
}
if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
netdev_info(netdev, "TxBD ring size must be no smaller than %d\n",
UCC_GETH_TX_BD_RING_SIZE_MIN);
return -EINVAL;
}
if (netif_running(netdev))
return -EBUSY;
ug_info->bdRingLenRx[queue] = ring->rx_pending;
ug_info->bdRingLenTx[queue] = ring->tx_pending;
return ret;
}
static int uec_get_sset_count(struct net_device *netdev, int sset)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
u32 stats_mode = ugeth->ug_info->statisticsMode;
int len = 0;
switch (sset) {
case ETH_SS_STATS:
if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
len += UEC_HW_STATS_LEN;
if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
len += UEC_TX_FW_STATS_LEN;
if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
len += UEC_RX_FW_STATS_LEN;
return len;
default:
return -EOPNOTSUPP;
}
}
static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
u32 stats_mode = ugeth->ug_info->statisticsMode;
if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
ETH_GSTRING_LEN);
buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
}
if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
ETH_GSTRING_LEN);
buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
}
if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
ETH_GSTRING_LEN);
}
static void uec_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, uint64_t *data)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
u32 stats_mode = ugeth->ug_info->statisticsMode;
u32 __iomem *base;
int i, j = 0;
if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
if (ugeth->ug_regs)
base = (u32 __iomem *)&ugeth->ug_regs->tx64;
else
base = NULL;
for (i = 0; i < UEC_HW_STATS_LEN; i++)
data[j++] = base ? in_be32(&base[i]) : 0;
}
if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
data[j++] = base ? in_be32(&base[i]) : 0;
}
if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
data[j++] = base ? in_be32(&base[i]) : 0;
}
}
/* Report driver information */
static void
uec_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
strscpy(drvinfo->bus_info, "QUICC ENGINE", sizeof(drvinfo->bus_info));
}
#ifdef CONFIG_PM
static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
struct phy_device *phydev = ugeth->phydev;
if (phydev && phydev->irq)
wol->supported |= WAKE_PHY;
if (qe_alive_during_sleep())
wol->supported |= WAKE_MAGIC;
wol->wolopts = ugeth->wol_en;
}
static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
struct ucc_geth_private *ugeth = netdev_priv(netdev);
struct phy_device *phydev = ugeth->phydev;
if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
return -EINVAL;
else if (wol->wolopts & WAKE_PHY && (!phydev || !phydev->irq))
return -EINVAL;
else if (wol->wolopts & WAKE_MAGIC && !qe_alive_during_sleep())
return -EINVAL;
ugeth->wol_en = wol->wolopts;
device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
return 0;
}
#else
#define uec_get_wol NULL
#define uec_set_wol NULL
#endif /* CONFIG_PM */
static const struct ethtool_ops uec_ethtool_ops = {
.get_drvinfo = uec_get_drvinfo,
.get_regs_len = uec_get_regs_len,
.get_regs = uec_get_regs,
.get_msglevel = uec_get_msglevel,
.set_msglevel = uec_set_msglevel,
.nway_reset = phy_ethtool_nway_reset,
.get_link = ethtool_op_get_link,
.get_ringparam = uec_get_ringparam,
.set_ringparam = uec_set_ringparam,
.get_pauseparam = uec_get_pauseparam,
.set_pauseparam = uec_set_pauseparam,
.get_sset_count = uec_get_sset_count,
.get_strings = uec_get_strings,
.get_ethtool_stats = uec_get_ethtool_stats,
.get_wol = uec_get_wol,
.set_wol = uec_set_wol,
.get_ts_info = ethtool_op_get_ts_info,
.get_link_ksettings = uec_get_ksettings,
.set_link_ksettings = uec_set_ksettings,
};
void uec_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &uec_ethtool_ops;
}
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