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