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// SPDX-License-Identifier: ISC
/*
* Copyright (c) 2014,2017 Qualcomm Atheros, Inc.
* Copyright (c) 2018, The Linux Foundation. All rights reserved.
*/
#include <linux/etherdevice.h>
#include <linux/pci.h>
#include <linux/rtnetlink.h>
#include <net/cfg80211.h>
#include "wil6210.h"
static int
wil_ethtoolops_get_coalesce(struct net_device *ndev,
struct ethtool_coalesce *cp,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
struct wil6210_priv *wil = ndev_to_wil(ndev);
u32 tx_itr_en, tx_itr_val = 0;
u32 rx_itr_en, rx_itr_val = 0;
int ret;
mutex_lock(&wil->mutex);
wil_dbg_misc(wil, "ethtoolops_get_coalesce\n");
ret = wil_pm_runtime_get(wil);
if (ret < 0)
goto out;
tx_itr_en = wil_r(wil, RGF_DMA_ITR_TX_CNT_CTL);
if (tx_itr_en & BIT_DMA_ITR_TX_CNT_CTL_EN)
tx_itr_val = wil_r(wil, RGF_DMA_ITR_TX_CNT_TRSH);
rx_itr_en = wil_r(wil, RGF_DMA_ITR_RX_CNT_CTL);
if (rx_itr_en & BIT_DMA_ITR_RX_CNT_CTL_EN)
rx_itr_val = wil_r(wil, RGF_DMA_ITR_RX_CNT_TRSH);
wil_pm_runtime_put(wil);
cp->tx_coalesce_usecs = tx_itr_val;
cp->rx_coalesce_usecs = rx_itr_val;
ret = 0;
out:
mutex_unlock(&wil->mutex);
return ret;
}
static int
wil_ethtoolops_set_coalesce(struct net_device *ndev,
struct ethtool_coalesce *cp,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
struct wil6210_priv *wil = ndev_to_wil(ndev);
struct wireless_dev *wdev = ndev->ieee80211_ptr;
int ret;
mutex_lock(&wil->mutex);
wil_dbg_misc(wil, "ethtoolops_set_coalesce: rx %d usec, tx %d usec\n",
cp->rx_coalesce_usecs, cp->tx_coalesce_usecs);
if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
wil_dbg_misc(wil, "No IRQ coalescing in monitor mode\n");
ret = -EINVAL;
goto out;
}
/* only @rx_coalesce_usecs and @tx_coalesce_usecs supported,
* ignore other parameters
*/
if (cp->rx_coalesce_usecs > WIL6210_ITR_TRSH_MAX ||
cp->tx_coalesce_usecs > WIL6210_ITR_TRSH_MAX)
goto out_bad;
wil->tx_max_burst_duration = cp->tx_coalesce_usecs;
wil->rx_max_burst_duration = cp->rx_coalesce_usecs;
ret = wil_pm_runtime_get(wil);
if (ret < 0)
goto out;
wil->txrx_ops.configure_interrupt_moderation(wil);
wil_pm_runtime_put(wil);
ret = 0;
out:
mutex_unlock(&wil->mutex);
return ret;
out_bad:
wil_dbg_misc(wil, "Unsupported coalescing params. Raw command:\n");
print_hex_dump_debug("DBG[MISC] coal ", DUMP_PREFIX_OFFSET, 16, 4,
cp, sizeof(*cp), false);
mutex_unlock(&wil->mutex);
return -EINVAL;
}
static const struct ethtool_ops wil_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_USECS,
.get_drvinfo = cfg80211_get_drvinfo,
.get_coalesce = wil_ethtoolops_get_coalesce,
.set_coalesce = wil_ethtoolops_set_coalesce,
};
void wil_set_ethtoolops(struct net_device *ndev)
{
ndev->ethtool_ops = &wil_ethtool_ops;
}
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