/*
* Copyright (c) 2014 Qualcomm Atheros, Inc.
*
* 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/etherdevice.h>
#include <linux/pci.h>
#include <linux/rtnetlink.h>
#include <net/cfg80211.h>
#include "wil6210.h"
static int wil_ethtoolops_begin(struct net_device *ndev)
{
struct wil6210_priv *wil = ndev_to_wil(ndev);
mutex_lock(&wil->mutex);
wil_dbg_misc(wil, "%s()\n", __func__);
return 0;
}
static void wil_ethtoolops_complete(struct net_device *ndev)
{
struct wil6210_priv *wil = ndev_to_wil(ndev);
wil_dbg_misc(wil, "%s()\n", __func__);
mutex_unlock(&wil->mutex);
}
static int wil_ethtoolops_get_coalesce(struct net_device *ndev,
struct ethtool_coalesce *cp)
{
struct wil6210_priv *wil = ndev_to_wil(ndev);
u32 tx_itr_en, tx_itr_val = 0;
u32 rx_itr_en, rx_itr_val = 0;
wil_dbg_misc(wil, "%s()\n", __func__);
if (test_bit(hw_capability_advanced_itr_moderation,
wil->hw_capabilities)) {
tx_itr_en = ioread32(wil->csr +
HOSTADDR(RGF_DMA_ITR_TX_CNT_CTL));
if (tx_itr_en & BIT_DMA_ITR_TX_CNT_CTL_EN)
tx_itr_val =
ioread32(wil->csr +
HOSTADDR(RGF_DMA_ITR_TX_CNT_TRSH));
rx_itr_en = ioread32(wil->csr +
HOSTADDR(RGF_DMA_ITR_RX_CNT_CTL));
if (rx_itr_en & BIT_DMA_ITR_RX_CNT_CTL_EN)
rx_itr_val =
ioread32(wil->csr +
HOSTADDR(RGF_DMA_ITR_RX_CNT_TRSH));
} else {
rx_itr_en = ioread32(wil->csr + HOSTADDR(RGF_DMA_ITR_CNT_CRL));
if (rx_itr_en & BIT_DMA_ITR_CNT_CRL_EN)
rx_itr_val = ioread32(wil->csr +
HOSTADDR(RGF_DMA_ITR_CNT_TRSH));
}
cp->tx_coalesce_usecs = tx_itr_val;
cp->rx_coalesce_usecs = rx_itr_val;
return 0;
}
static int wil_ethtoolops_set_coalesce(struct net_device *ndev,
struct ethtool_coalesce *cp)
{
struct wil6210_priv *wil = ndev_to_wil(ndev);
wil_dbg_misc(wil, "%s(rx %d usec, tx %d usec)\n", __func__,
cp->rx_coalesce_usecs, cp->tx_coalesce_usecs);
if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR) {
wil_dbg_misc(wil, "No IRQ coalescing in monitor mode\n");
return -EINVAL;
}
/* 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;
wil_configure_interrupt_moderation(wil);
return 0;
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);
return -EINVAL;
}
static const struct ethtool_ops wil_ethtool_ops = {
.begin = wil_ethtoolops_begin,
.complete = wil_ethtoolops_complete,
.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;
}
