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linux/drivers/net/ethernet/synopsys/dwc-xlgmac-ethtool.c
Jakub Kicinski a5a8758f42 net: dwc-xlgmac: let core reject the unsupported coalescing parameters 
Set ethtool_ops->supported_coalesce_params to let
the core reject unsupported coalescing parameters.

This driver already correctly rejected all unsupported
parameters.

While at it remove unnecessary zeroing on get.

No functional changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-17 20:56:57 -07:00

263 lines
8.5 KiB
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/* Synopsys DesignWare Core Enterprise Ethernet (XLGMAC) Driver
*
* Copyright (c) 2017 Synopsys, Inc. (www.synopsys.com)
*
* This program is dual-licensed; you may select either version 2 of
* the GNU General Public License ("GPL") or BSD license ("BSD").
*
* This Synopsys DWC XLGMAC software driver and associated documentation
* (hereinafter the "Software") is an unsupported proprietary work of
* Synopsys, Inc. unless otherwise expressly agreed to in writing between
* Synopsys and you. The Software IS NOT an item of Licensed Software or a
* Licensed Product under any End User Software License Agreement or
* Agreement for Licensed Products with Synopsys or any supplement thereto.
* Synopsys is a registered trademark of Synopsys, Inc. Other names included
* in the SOFTWARE may be the trademarks of their respective owners.
*/
#include <linux/ethtool.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include "dwc-xlgmac.h"
#include "dwc-xlgmac-reg.h"
struct xlgmac_stats_desc {
char stat_string[ETH_GSTRING_LEN];
int stat_offset;
};
#define XLGMAC_STAT(str, var) \
{ \
str, \
offsetof(struct xlgmac_pdata, stats.var), \
}
static const struct xlgmac_stats_desc xlgmac_gstring_stats[] = {
/* MMC TX counters */
XLGMAC_STAT("tx_bytes", txoctetcount_gb),
XLGMAC_STAT("tx_bytes_good", txoctetcount_g),
XLGMAC_STAT("tx_packets", txframecount_gb),
XLGMAC_STAT("tx_packets_good", txframecount_g),
XLGMAC_STAT("tx_unicast_packets", txunicastframes_gb),
XLGMAC_STAT("tx_broadcast_packets", txbroadcastframes_gb),
XLGMAC_STAT("tx_broadcast_packets_good", txbroadcastframes_g),
XLGMAC_STAT("tx_multicast_packets", txmulticastframes_gb),
XLGMAC_STAT("tx_multicast_packets_good", txmulticastframes_g),
XLGMAC_STAT("tx_vlan_packets_good", txvlanframes_g),
XLGMAC_STAT("tx_64_byte_packets", tx64octets_gb),
XLGMAC_STAT("tx_65_to_127_byte_packets", tx65to127octets_gb),
XLGMAC_STAT("tx_128_to_255_byte_packets", tx128to255octets_gb),
XLGMAC_STAT("tx_256_to_511_byte_packets", tx256to511octets_gb),
XLGMAC_STAT("tx_512_to_1023_byte_packets", tx512to1023octets_gb),
XLGMAC_STAT("tx_1024_to_max_byte_packets", tx1024tomaxoctets_gb),
XLGMAC_STAT("tx_underflow_errors", txunderflowerror),
XLGMAC_STAT("tx_pause_frames", txpauseframes),
/* MMC RX counters */
XLGMAC_STAT("rx_bytes", rxoctetcount_gb),
XLGMAC_STAT("rx_bytes_good", rxoctetcount_g),
XLGMAC_STAT("rx_packets", rxframecount_gb),
XLGMAC_STAT("rx_unicast_packets_good", rxunicastframes_g),
XLGMAC_STAT("rx_broadcast_packets_good", rxbroadcastframes_g),
XLGMAC_STAT("rx_multicast_packets_good", rxmulticastframes_g),
XLGMAC_STAT("rx_vlan_packets", rxvlanframes_gb),
XLGMAC_STAT("rx_64_byte_packets", rx64octets_gb),
XLGMAC_STAT("rx_65_to_127_byte_packets", rx65to127octets_gb),
XLGMAC_STAT("rx_128_to_255_byte_packets", rx128to255octets_gb),
XLGMAC_STAT("rx_256_to_511_byte_packets", rx256to511octets_gb),
XLGMAC_STAT("rx_512_to_1023_byte_packets", rx512to1023octets_gb),
XLGMAC_STAT("rx_1024_to_max_byte_packets", rx1024tomaxoctets_gb),
XLGMAC_STAT("rx_undersize_packets_good", rxundersize_g),
XLGMAC_STAT("rx_oversize_packets_good", rxoversize_g),
XLGMAC_STAT("rx_crc_errors", rxcrcerror),
XLGMAC_STAT("rx_crc_errors_small_packets", rxrunterror),
XLGMAC_STAT("rx_crc_errors_giant_packets", rxjabbererror),
XLGMAC_STAT("rx_length_errors", rxlengtherror),
XLGMAC_STAT("rx_out_of_range_errors", rxoutofrangetype),
XLGMAC_STAT("rx_fifo_overflow_errors", rxfifooverflow),
XLGMAC_STAT("rx_watchdog_errors", rxwatchdogerror),
XLGMAC_STAT("rx_pause_frames", rxpauseframes),
/* Extra counters */
XLGMAC_STAT("tx_tso_packets", tx_tso_packets),
XLGMAC_STAT("rx_split_header_packets", rx_split_header_packets),
XLGMAC_STAT("tx_process_stopped", tx_process_stopped),
XLGMAC_STAT("rx_process_stopped", rx_process_stopped),
XLGMAC_STAT("tx_buffer_unavailable", tx_buffer_unavailable),
XLGMAC_STAT("rx_buffer_unavailable", rx_buffer_unavailable),
XLGMAC_STAT("fatal_bus_error", fatal_bus_error),
XLGMAC_STAT("tx_vlan_packets", tx_vlan_packets),
XLGMAC_STAT("rx_vlan_packets", rx_vlan_packets),
XLGMAC_STAT("napi_poll_isr", napi_poll_isr),
XLGMAC_STAT("napi_poll_txtimer", napi_poll_txtimer),
};
#define XLGMAC_STATS_COUNT ARRAY_SIZE(xlgmac_gstring_stats)
static void xlgmac_ethtool_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
struct xlgmac_pdata *pdata = netdev_priv(netdev);
u32 ver = pdata->hw_feat.version;
u32 snpsver, devid, userver;
strlcpy(drvinfo->driver, pdata->drv_name, sizeof(drvinfo->driver));
strlcpy(drvinfo->version, pdata->drv_ver, sizeof(drvinfo->version));
strlcpy(drvinfo->bus_info, dev_name(pdata->dev),
sizeof(drvinfo->bus_info));
/* S|SNPSVER: Synopsys-defined Version
* D|DEVID: Indicates the Device family
* U|USERVER: User-defined Version
*/
snpsver = XLGMAC_GET_REG_BITS(ver, MAC_VR_SNPSVER_POS,
MAC_VR_SNPSVER_LEN);
devid = XLGMAC_GET_REG_BITS(ver, MAC_VR_DEVID_POS,
MAC_VR_DEVID_LEN);
userver = XLGMAC_GET_REG_BITS(ver, MAC_VR_USERVER_POS,
MAC_VR_USERVER_LEN);
snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
"S.D.U: %x.%x.%x", snpsver, devid, userver);
}
static u32 xlgmac_ethtool_get_msglevel(struct net_device *netdev)
{
struct xlgmac_pdata *pdata = netdev_priv(netdev);
return pdata->msg_enable;
}
static void xlgmac_ethtool_set_msglevel(struct net_device *netdev,
u32 msglevel)
{
struct xlgmac_pdata *pdata = netdev_priv(netdev);
pdata->msg_enable = msglevel;
}
static void xlgmac_ethtool_get_channels(struct net_device *netdev,
struct ethtool_channels *channel)
{
struct xlgmac_pdata *pdata = netdev_priv(netdev);
channel->max_rx = XLGMAC_MAX_DMA_CHANNELS;
channel->max_tx = XLGMAC_MAX_DMA_CHANNELS;
channel->rx_count = pdata->rx_q_count;
channel->tx_count = pdata->tx_q_count;
}
static int xlgmac_ethtool_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec)
{
struct xlgmac_pdata *pdata = netdev_priv(netdev);
ec->rx_coalesce_usecs = pdata->rx_usecs;
ec->rx_max_coalesced_frames = pdata->rx_frames;
ec->tx_max_coalesced_frames = pdata->tx_frames;
return 0;
}
static int xlgmac_ethtool_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec)
{
struct xlgmac_pdata *pdata = netdev_priv(netdev);
struct xlgmac_hw_ops *hw_ops = &pdata->hw_ops;
unsigned int rx_frames, rx_riwt, rx_usecs;
unsigned int tx_frames;
rx_usecs = ec->rx_coalesce_usecs;
rx_riwt = hw_ops->usec_to_riwt(pdata, rx_usecs);
rx_frames = ec->rx_max_coalesced_frames;
tx_frames = ec->tx_max_coalesced_frames;
if ((rx_riwt > XLGMAC_MAX_DMA_RIWT) ||
(rx_riwt < XLGMAC_MIN_DMA_RIWT) ||
(rx_frames > pdata->rx_desc_count))
return -EINVAL;
if (tx_frames > pdata->tx_desc_count)
return -EINVAL;
pdata->rx_riwt = rx_riwt;
pdata->rx_usecs = rx_usecs;
pdata->rx_frames = rx_frames;
hw_ops->config_rx_coalesce(pdata);
pdata->tx_frames = tx_frames;
hw_ops->config_tx_coalesce(pdata);
return 0;
}
static void xlgmac_ethtool_get_strings(struct net_device *netdev,
u32 stringset, u8 *data)
{
int i;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < XLGMAC_STATS_COUNT; i++) {
memcpy(data, xlgmac_gstring_stats[i].stat_string,
ETH_GSTRING_LEN);
data += ETH_GSTRING_LEN;
}
break;
default:
WARN_ON(1);
break;
}
}
static int xlgmac_ethtool_get_sset_count(struct net_device *netdev,
int stringset)
{
int ret;
switch (stringset) {
case ETH_SS_STATS:
ret = XLGMAC_STATS_COUNT;
break;
default:
ret = -EOPNOTSUPP;
}
return ret;
}
static void xlgmac_ethtool_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats,
u64 *data)
{
struct xlgmac_pdata *pdata = netdev_priv(netdev);
u8 *stat;
int i;
pdata->hw_ops.read_mmc_stats(pdata);
for (i = 0; i < XLGMAC_STATS_COUNT; i++) {
stat = (u8 *)pdata + xlgmac_gstring_stats[i].stat_offset;
*data++ = *(u64 *)stat;
}
}
static const struct ethtool_ops xlgmac_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
ETHTOOL_COALESCE_MAX_FRAMES,
.get_drvinfo = xlgmac_ethtool_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_msglevel = xlgmac_ethtool_get_msglevel,
.set_msglevel = xlgmac_ethtool_set_msglevel,
.get_channels = xlgmac_ethtool_get_channels,
.get_coalesce = xlgmac_ethtool_get_coalesce,
.set_coalesce = xlgmac_ethtool_set_coalesce,
.get_strings = xlgmac_ethtool_get_strings,
.get_sset_count = xlgmac_ethtool_get_sset_count,
.get_ethtool_stats = xlgmac_ethtool_get_ethtool_stats,
};
const struct ethtool_ops *xlgmac_get_ethtool_ops(void)
{
return &xlgmac_ethtool_ops;
}
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