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/*
* Copyright (c) 2015 - 2016, The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all copies.
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/ethtool.h>
#include <linux/netdevice.h>
#include <linux/string.h>
#include "edma.h"
struct edma_ethtool_stats {
uint8_t stat_string[ETH_GSTRING_LEN];
uint32_t stat_offset;
};
#define EDMA_STAT(m) offsetof(struct edma_ethtool_statistics, m)
#define DRVINFO_LEN 32
/* Array of strings describing statistics
*/
static const struct edma_ethtool_stats edma_gstrings_stats[] = {
{"tx_q0_pkt", EDMA_STAT(tx_q0_pkt)},
{"tx_q1_pkt", EDMA_STAT(tx_q1_pkt)},
{"tx_q2_pkt", EDMA_STAT(tx_q2_pkt)},
{"tx_q3_pkt", EDMA_STAT(tx_q3_pkt)},
{"tx_q4_pkt", EDMA_STAT(tx_q4_pkt)},
{"tx_q5_pkt", EDMA_STAT(tx_q5_pkt)},
{"tx_q6_pkt", EDMA_STAT(tx_q6_pkt)},
{"tx_q7_pkt", EDMA_STAT(tx_q7_pkt)},
{"tx_q8_pkt", EDMA_STAT(tx_q8_pkt)},
{"tx_q9_pkt", EDMA_STAT(tx_q9_pkt)},
{"tx_q10_pkt", EDMA_STAT(tx_q10_pkt)},
{"tx_q11_pkt", EDMA_STAT(tx_q11_pkt)},
{"tx_q12_pkt", EDMA_STAT(tx_q12_pkt)},
{"tx_q13_pkt", EDMA_STAT(tx_q13_pkt)},
{"tx_q14_pkt", EDMA_STAT(tx_q14_pkt)},
{"tx_q15_pkt", EDMA_STAT(tx_q15_pkt)},
{"tx_q0_byte", EDMA_STAT(tx_q0_byte)},
{"tx_q1_byte", EDMA_STAT(tx_q1_byte)},
{"tx_q2_byte", EDMA_STAT(tx_q2_byte)},
{"tx_q3_byte", EDMA_STAT(tx_q3_byte)},
{"tx_q4_byte", EDMA_STAT(tx_q4_byte)},
{"tx_q5_byte", EDMA_STAT(tx_q5_byte)},
{"tx_q6_byte", EDMA_STAT(tx_q6_byte)},
{"tx_q7_byte", EDMA_STAT(tx_q7_byte)},
{"tx_q8_byte", EDMA_STAT(tx_q8_byte)},
{"tx_q9_byte", EDMA_STAT(tx_q9_byte)},
{"tx_q10_byte", EDMA_STAT(tx_q10_byte)},
{"tx_q11_byte", EDMA_STAT(tx_q11_byte)},
{"tx_q12_byte", EDMA_STAT(tx_q12_byte)},
{"tx_q13_byte", EDMA_STAT(tx_q13_byte)},
{"tx_q14_byte", EDMA_STAT(tx_q14_byte)},
{"tx_q15_byte", EDMA_STAT(tx_q15_byte)},
{"rx_q0_pkt", EDMA_STAT(rx_q0_pkt)},
{"rx_q1_pkt", EDMA_STAT(rx_q1_pkt)},
{"rx_q2_pkt", EDMA_STAT(rx_q2_pkt)},
{"rx_q3_pkt", EDMA_STAT(rx_q3_pkt)},
{"rx_q4_pkt", EDMA_STAT(rx_q4_pkt)},
{"rx_q5_pkt", EDMA_STAT(rx_q5_pkt)},
{"rx_q6_pkt", EDMA_STAT(rx_q6_pkt)},
{"rx_q7_pkt", EDMA_STAT(rx_q7_pkt)},
{"rx_q0_byte", EDMA_STAT(rx_q0_byte)},
{"rx_q1_byte", EDMA_STAT(rx_q1_byte)},
{"rx_q2_byte", EDMA_STAT(rx_q2_byte)},
{"rx_q3_byte", EDMA_STAT(rx_q3_byte)},
{"rx_q4_byte", EDMA_STAT(rx_q4_byte)},
{"rx_q5_byte", EDMA_STAT(rx_q5_byte)},
{"rx_q6_byte", EDMA_STAT(rx_q6_byte)},
{"rx_q7_byte", EDMA_STAT(rx_q7_byte)},
{"tx_desc_error", EDMA_STAT(tx_desc_error)},
{"rx_alloc_fail_ctr", EDMA_STAT(rx_alloc_fail_ctr)},
};
#define EDMA_STATS_LEN ARRAY_SIZE(edma_gstrings_stats)
/* edma_get_strset_count()
* Get strset count
*/
static int edma_get_strset_count(struct net_device *netdev,
int sset)
{
switch (sset) {
case ETH_SS_STATS:
return EDMA_STATS_LEN;
default:
netdev_dbg(netdev, "%s: Invalid string set", __func__);
return -EOPNOTSUPP;
}
}
/* edma_get_strings()
* get stats string
*/
static void edma_get_strings(struct net_device *netdev, uint32_t stringset,
uint8_t *data)
{
uint8_t *p = data;
uint32_t i;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < EDMA_STATS_LEN; i++) {
memcpy(p, edma_gstrings_stats[i].stat_string,
min((size_t)ETH_GSTRING_LEN,
strlen(edma_gstrings_stats[i].stat_string)
+ 1));
p += ETH_GSTRING_LEN;
}
break;
}
}
/* edma_get_ethtool_stats()
* Get ethtool statistics
*/
static void edma_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, uint64_t *data)
{
struct edma_adapter *adapter = netdev_priv(netdev);
struct edma_common_info *edma_cinfo = adapter->edma_cinfo;
int i;
uint8_t *p = NULL;
edma_read_append_stats(edma_cinfo);
for(i = 0; i < EDMA_STATS_LEN; i++) {
p = (uint8_t *)&(edma_cinfo->edma_ethstats) +
edma_gstrings_stats[i].stat_offset;
data[i] = *(uint32_t *)p;
}
}
/* edma_get_drvinfo()
* get edma driver info
*/
static void edma_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
strlcpy(info->driver, "ess_edma", DRVINFO_LEN);
strlcpy(info->bus_info, "axi", ETHTOOL_BUSINFO_LEN);
}
/* edma_nway_reset()
* Reset the phy, if available.
*/
static int edma_nway_reset(struct net_device *netdev)
{
return -EINVAL;
}
/* edma_get_wol()
* get wake on lan info
*/
static void edma_get_wol(struct net_device *netdev,
struct ethtool_wolinfo *wol)
{
wol->supported = 0;
wol->wolopts = 0;
}
/* edma_get_msglevel()
* get message level.
*/
static uint32_t edma_get_msglevel(struct net_device *netdev)
{
return 0;
}
/* edma_get_settings()
* Get edma settings
*/
static int edma_get_settings(struct net_device *netdev,
struct ethtool_link_ksettings *cmd)
{
struct edma_adapter *adapter = netdev_priv(netdev);
if (adapter->poll_required) {
if ((adapter->forced_speed != SPEED_UNKNOWN)
&& !(adapter->poll_required))
return -EPERM;
phy_ethtool_ksettings_get(adapter->phydev, cmd);
if (linkmode_test_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, adapter->phydev->advertising))
cmd->base.port = PORT_FIBRE;
else
cmd->base.port = PORT_TP;
} else {
/* If the speed/duplex for this GMAC is forced and we
* are not polling for link state changes, return the
* values as specified by platform. This will be true
* for GMACs connected to switch, and interfaces that
* do not use a PHY.
*/
if (!(adapter->poll_required)) {
if (adapter->forced_speed != SPEED_UNKNOWN) {
/* set speed and duplex */
cmd->base.speed = SPEED_1000;
cmd->base.duplex = DUPLEX_FULL;
/* Populate capabilities advertised by self */
linkmode_zero(cmd->link_modes.advertising);
cmd->base.autoneg = 0;
cmd->base.port = PORT_TP;
cmd->base.transceiver = XCVR_EXTERNAL;
} else {
/* non link polled and non
* forced speed/duplex interface
*/
return -EIO;
}
}
}
return 0;
}
/* edma_set_settings()
* Set EDMA settings
*/
static int edma_set_settings(struct net_device *netdev,
const struct ethtool_link_ksettings *cmd)
{
struct edma_adapter *adapter = netdev_priv(netdev);
if ((adapter->forced_speed != SPEED_UNKNOWN) &&
!adapter->poll_required)
return -EPERM;
return phy_ethtool_ksettings_set(adapter->phydev, cmd);
}
/* edma_get_coalesce
* get interrupt mitigation
*/
static int edma_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec)
{
u32 reg_val;
edma_get_tx_rx_coalesce(®_val);
/* We read the Interrupt Moderation Timer(IMT) register value,
* use lower 16 bit for rx and higher 16 bit for Tx. We do a
* left shift by 1, because IMT resolution timer is 2usecs.
* Hence the value given by the register is multiplied by 2 to
* get the actual time in usecs.
*/
ec->tx_coalesce_usecs = (((reg_val >> 16) & 0xffff) << 1);
ec->rx_coalesce_usecs = ((reg_val & 0xffff) << 1);
return 0;
}
/* edma_set_coalesce
* set interrupt mitigation
*/
static int edma_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec)
{
if (ec->tx_coalesce_usecs)
edma_change_tx_coalesce(ec->tx_coalesce_usecs);
if (ec->rx_coalesce_usecs)
edma_change_rx_coalesce(ec->rx_coalesce_usecs);
return 0;
}
/* edma_set_priv_flags()
* Set EDMA private flags
*/
static int edma_set_priv_flags(struct net_device *netdev, u32 flags)
{
return 0;
}
/* edma_get_priv_flags()
* get edma driver flags
*/
static u32 edma_get_priv_flags(struct net_device *netdev)
{
return 0;
}
/* edma_get_ringparam()
* get ring size
*/
static void edma_get_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct edma_adapter *adapter = netdev_priv(netdev);
struct edma_common_info *edma_cinfo = adapter->edma_cinfo;
ring->tx_max_pending = edma_cinfo->tx_ring_count;
ring->rx_max_pending = edma_cinfo->rx_ring_count;
}
/* Ethtool operations
*/
static const struct ethtool_ops edma_ethtool_ops = {
.get_drvinfo = &edma_get_drvinfo,
.get_link = ðtool_op_get_link,
.get_msglevel = &edma_get_msglevel,
.nway_reset = &edma_nway_reset,
.get_wol = &edma_get_wol,
.get_link_ksettings = &edma_get_settings,
.set_link_ksettings = &edma_set_settings,
.get_strings = &edma_get_strings,
.get_sset_count = &edma_get_strset_count,
.get_ethtool_stats = &edma_get_ethtool_stats,
.get_coalesce = &edma_get_coalesce,
.set_coalesce = &edma_set_coalesce,
.get_priv_flags = edma_get_priv_flags,
.set_priv_flags = edma_set_priv_flags,
.get_ringparam = edma_get_ringparam,
};
/* edma_set_ethtool_ops
* Set ethtool operations
*/
void edma_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &edma_ethtool_ops;
}
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