1*4882a593Smuzhiyun // SPDX-License-Identifier: ISC
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (c) 2014,2017 Qualcomm Atheros, Inc.
4*4882a593Smuzhiyun * Copyright (c) 2018, The Linux Foundation. All rights reserved.
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <linux/etherdevice.h>
8*4882a593Smuzhiyun #include <linux/pci.h>
9*4882a593Smuzhiyun #include <linux/rtnetlink.h>
10*4882a593Smuzhiyun #include <net/cfg80211.h>
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include "wil6210.h"
13*4882a593Smuzhiyun
wil_ethtoolops_get_coalesce(struct net_device * ndev,struct ethtool_coalesce * cp)14*4882a593Smuzhiyun static int wil_ethtoolops_get_coalesce(struct net_device *ndev,
15*4882a593Smuzhiyun struct ethtool_coalesce *cp)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun struct wil6210_priv *wil = ndev_to_wil(ndev);
18*4882a593Smuzhiyun u32 tx_itr_en, tx_itr_val = 0;
19*4882a593Smuzhiyun u32 rx_itr_en, rx_itr_val = 0;
20*4882a593Smuzhiyun int ret;
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun mutex_lock(&wil->mutex);
23*4882a593Smuzhiyun wil_dbg_misc(wil, "ethtoolops_get_coalesce\n");
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun ret = wil_pm_runtime_get(wil);
26*4882a593Smuzhiyun if (ret < 0)
27*4882a593Smuzhiyun goto out;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun tx_itr_en = wil_r(wil, RGF_DMA_ITR_TX_CNT_CTL);
30*4882a593Smuzhiyun if (tx_itr_en & BIT_DMA_ITR_TX_CNT_CTL_EN)
31*4882a593Smuzhiyun tx_itr_val = wil_r(wil, RGF_DMA_ITR_TX_CNT_TRSH);
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun rx_itr_en = wil_r(wil, RGF_DMA_ITR_RX_CNT_CTL);
34*4882a593Smuzhiyun if (rx_itr_en & BIT_DMA_ITR_RX_CNT_CTL_EN)
35*4882a593Smuzhiyun rx_itr_val = wil_r(wil, RGF_DMA_ITR_RX_CNT_TRSH);
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun wil_pm_runtime_put(wil);
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun cp->tx_coalesce_usecs = tx_itr_val;
40*4882a593Smuzhiyun cp->rx_coalesce_usecs = rx_itr_val;
41*4882a593Smuzhiyun ret = 0;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun out:
44*4882a593Smuzhiyun mutex_unlock(&wil->mutex);
45*4882a593Smuzhiyun return ret;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
wil_ethtoolops_set_coalesce(struct net_device * ndev,struct ethtool_coalesce * cp)48*4882a593Smuzhiyun static int wil_ethtoolops_set_coalesce(struct net_device *ndev,
49*4882a593Smuzhiyun struct ethtool_coalesce *cp)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun struct wil6210_priv *wil = ndev_to_wil(ndev);
52*4882a593Smuzhiyun struct wireless_dev *wdev = ndev->ieee80211_ptr;
53*4882a593Smuzhiyun int ret;
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun mutex_lock(&wil->mutex);
56*4882a593Smuzhiyun wil_dbg_misc(wil, "ethtoolops_set_coalesce: rx %d usec, tx %d usec\n",
57*4882a593Smuzhiyun cp->rx_coalesce_usecs, cp->tx_coalesce_usecs);
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
60*4882a593Smuzhiyun wil_dbg_misc(wil, "No IRQ coalescing in monitor mode\n");
61*4882a593Smuzhiyun ret = -EINVAL;
62*4882a593Smuzhiyun goto out;
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun /* only @rx_coalesce_usecs and @tx_coalesce_usecs supported,
66*4882a593Smuzhiyun * ignore other parameters
67*4882a593Smuzhiyun */
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun if (cp->rx_coalesce_usecs > WIL6210_ITR_TRSH_MAX ||
70*4882a593Smuzhiyun cp->tx_coalesce_usecs > WIL6210_ITR_TRSH_MAX)
71*4882a593Smuzhiyun goto out_bad;
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun wil->tx_max_burst_duration = cp->tx_coalesce_usecs;
74*4882a593Smuzhiyun wil->rx_max_burst_duration = cp->rx_coalesce_usecs;
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun ret = wil_pm_runtime_get(wil);
77*4882a593Smuzhiyun if (ret < 0)
78*4882a593Smuzhiyun goto out;
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun wil->txrx_ops.configure_interrupt_moderation(wil);
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun wil_pm_runtime_put(wil);
83*4882a593Smuzhiyun ret = 0;
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun out:
86*4882a593Smuzhiyun mutex_unlock(&wil->mutex);
87*4882a593Smuzhiyun return ret;
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun out_bad:
90*4882a593Smuzhiyun wil_dbg_misc(wil, "Unsupported coalescing params. Raw command:\n");
91*4882a593Smuzhiyun print_hex_dump_debug("DBG[MISC] coal ", DUMP_PREFIX_OFFSET, 16, 4,
92*4882a593Smuzhiyun cp, sizeof(*cp), false);
93*4882a593Smuzhiyun mutex_unlock(&wil->mutex);
94*4882a593Smuzhiyun return -EINVAL;
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun static const struct ethtool_ops wil_ethtool_ops = {
98*4882a593Smuzhiyun .supported_coalesce_params = ETHTOOL_COALESCE_USECS,
99*4882a593Smuzhiyun .get_drvinfo = cfg80211_get_drvinfo,
100*4882a593Smuzhiyun .get_coalesce = wil_ethtoolops_get_coalesce,
101*4882a593Smuzhiyun .set_coalesce = wil_ethtoolops_set_coalesce,
102*4882a593Smuzhiyun };
103*4882a593Smuzhiyun
wil_set_ethtoolops(struct net_device * ndev)104*4882a593Smuzhiyun void wil_set_ethtoolops(struct net_device *ndev)
105*4882a593Smuzhiyun {
106*4882a593Smuzhiyun ndev->ethtool_ops = &wil_ethtool_ops;
107*4882a593Smuzhiyun }
108