/*
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* Copyright (c) 2014,2017 Qualcomm Atheros, Inc.
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* Copyright (c) 2018, The Linux Foundation. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/etherdevice.h>
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#include <linux/pci.h>
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#include <linux/rtnetlink.h>
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#include <net/cfg80211.h>
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#include "wil6210.h"
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static int wil_ethtoolops_begin(struct net_device *ndev)
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{
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struct wil6210_priv *wil = ndev_to_wil(ndev);
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mutex_lock(&wil->mutex);
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wil_dbg_misc(wil, "ethtoolops_begin\n");
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return 0;
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}
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static void wil_ethtoolops_complete(struct net_device *ndev)
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{
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struct wil6210_priv *wil = ndev_to_wil(ndev);
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wil_dbg_misc(wil, "ethtoolops_complete\n");
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mutex_unlock(&wil->mutex);
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}
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static int wil_ethtoolops_get_coalesce(struct net_device *ndev,
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struct ethtool_coalesce *cp)
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{
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struct wil6210_priv *wil = ndev_to_wil(ndev);
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u32 tx_itr_en, tx_itr_val = 0;
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u32 rx_itr_en, rx_itr_val = 0;
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int ret;
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wil_dbg_misc(wil, "ethtoolops_get_coalesce\n");
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ret = wil_pm_runtime_get(wil);
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if (ret < 0)
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return ret;
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tx_itr_en = wil_r(wil, RGF_DMA_ITR_TX_CNT_CTL);
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if (tx_itr_en & BIT_DMA_ITR_TX_CNT_CTL_EN)
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tx_itr_val = wil_r(wil, RGF_DMA_ITR_TX_CNT_TRSH);
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rx_itr_en = wil_r(wil, RGF_DMA_ITR_RX_CNT_CTL);
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if (rx_itr_en & BIT_DMA_ITR_RX_CNT_CTL_EN)
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rx_itr_val = wil_r(wil, RGF_DMA_ITR_RX_CNT_TRSH);
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wil_pm_runtime_put(wil);
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cp->tx_coalesce_usecs = tx_itr_val;
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cp->rx_coalesce_usecs = rx_itr_val;
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return 0;
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}
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static int wil_ethtoolops_set_coalesce(struct net_device *ndev,
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struct ethtool_coalesce *cp)
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{
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struct wil6210_priv *wil = ndev_to_wil(ndev);
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struct wireless_dev *wdev = ndev->ieee80211_ptr;
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int ret;
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wil_dbg_misc(wil, "ethtoolops_set_coalesce: rx %d usec, tx %d usec\n",
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cp->rx_coalesce_usecs, cp->tx_coalesce_usecs);
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if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
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wil_dbg_misc(wil, "No IRQ coalescing in monitor mode\n");
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return -EINVAL;
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}
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/* only @rx_coalesce_usecs and @tx_coalesce_usecs supported,
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* ignore other parameters
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*/
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if (cp->rx_coalesce_usecs > WIL6210_ITR_TRSH_MAX ||
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cp->tx_coalesce_usecs > WIL6210_ITR_TRSH_MAX)
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goto out_bad;
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wil->tx_max_burst_duration = cp->tx_coalesce_usecs;
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wil->rx_max_burst_duration = cp->rx_coalesce_usecs;
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ret = wil_pm_runtime_get(wil);
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if (ret < 0)
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return ret;
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wil->txrx_ops.configure_interrupt_moderation(wil);
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wil_pm_runtime_put(wil);
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return 0;
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out_bad:
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wil_dbg_misc(wil, "Unsupported coalescing params. Raw command:\n");
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print_hex_dump_debug("DBG[MISC] coal ", DUMP_PREFIX_OFFSET, 16, 4,
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cp, sizeof(*cp), false);
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return -EINVAL;
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}
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static const struct ethtool_ops wil_ethtool_ops = {
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.begin = wil_ethtoolops_begin,
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.complete = wil_ethtoolops_complete,
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.get_drvinfo = cfg80211_get_drvinfo,
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.get_coalesce = wil_ethtoolops_get_coalesce,
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.set_coalesce = wil_ethtoolops_set_coalesce,
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};
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void wil_set_ethtoolops(struct net_device *ndev)
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{
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ndev->ethtool_ops = &wil_ethtool_ops;
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}
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