1 /*
2 * Copyright (c) 2014,2017 Qualcomm Atheros, Inc.
3 * Copyright (c) 2018, The Linux Foundation. All rights reserved.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <linux/etherdevice.h>
19 #include <linux/pci.h>
20 #include <linux/rtnetlink.h>
21 #include <net/cfg80211.h>
22
23 #include "wil6210.h"
24
wil_ethtoolops_begin(struct net_device * ndev)25 static int wil_ethtoolops_begin(struct net_device *ndev)
26 {
27 struct wil6210_priv *wil = ndev_to_wil(ndev);
28
29 mutex_lock(&wil->mutex);
30
31 wil_dbg_misc(wil, "ethtoolops_begin\n");
32
33 return 0;
34 }
35
wil_ethtoolops_complete(struct net_device * ndev)36 static void wil_ethtoolops_complete(struct net_device *ndev)
37 {
38 struct wil6210_priv *wil = ndev_to_wil(ndev);
39
40 wil_dbg_misc(wil, "ethtoolops_complete\n");
41
42 mutex_unlock(&wil->mutex);
43 }
44
wil_ethtoolops_get_coalesce(struct net_device * ndev,struct ethtool_coalesce * cp)45 static int wil_ethtoolops_get_coalesce(struct net_device *ndev,
46 struct ethtool_coalesce *cp)
47 {
48 struct wil6210_priv *wil = ndev_to_wil(ndev);
49 u32 tx_itr_en, tx_itr_val = 0;
50 u32 rx_itr_en, rx_itr_val = 0;
51 int ret;
52
53 wil_dbg_misc(wil, "ethtoolops_get_coalesce\n");
54
55 ret = wil_pm_runtime_get(wil);
56 if (ret < 0)
57 return ret;
58
59 tx_itr_en = wil_r(wil, RGF_DMA_ITR_TX_CNT_CTL);
60 if (tx_itr_en & BIT_DMA_ITR_TX_CNT_CTL_EN)
61 tx_itr_val = wil_r(wil, RGF_DMA_ITR_TX_CNT_TRSH);
62
63 rx_itr_en = wil_r(wil, RGF_DMA_ITR_RX_CNT_CTL);
64 if (rx_itr_en & BIT_DMA_ITR_RX_CNT_CTL_EN)
65 rx_itr_val = wil_r(wil, RGF_DMA_ITR_RX_CNT_TRSH);
66
67 wil_pm_runtime_put(wil);
68
69 cp->tx_coalesce_usecs = tx_itr_val;
70 cp->rx_coalesce_usecs = rx_itr_val;
71 return 0;
72 }
73
wil_ethtoolops_set_coalesce(struct net_device * ndev,struct ethtool_coalesce * cp)74 static int wil_ethtoolops_set_coalesce(struct net_device *ndev,
75 struct ethtool_coalesce *cp)
76 {
77 struct wil6210_priv *wil = ndev_to_wil(ndev);
78 struct wireless_dev *wdev = ndev->ieee80211_ptr;
79 int ret;
80
81 wil_dbg_misc(wil, "ethtoolops_set_coalesce: rx %d usec, tx %d usec\n",
82 cp->rx_coalesce_usecs, cp->tx_coalesce_usecs);
83
84 if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
85 wil_dbg_misc(wil, "No IRQ coalescing in monitor mode\n");
86 return -EINVAL;
87 }
88
89 /* only @rx_coalesce_usecs and @tx_coalesce_usecs supported,
90 * ignore other parameters
91 */
92
93 if (cp->rx_coalesce_usecs > WIL6210_ITR_TRSH_MAX ||
94 cp->tx_coalesce_usecs > WIL6210_ITR_TRSH_MAX)
95 goto out_bad;
96
97 wil->tx_max_burst_duration = cp->tx_coalesce_usecs;
98 wil->rx_max_burst_duration = cp->rx_coalesce_usecs;
99
100 ret = wil_pm_runtime_get(wil);
101 if (ret < 0)
102 return ret;
103
104 wil->txrx_ops.configure_interrupt_moderation(wil);
105
106 wil_pm_runtime_put(wil);
107
108 return 0;
109
110 out_bad:
111 wil_dbg_misc(wil, "Unsupported coalescing params. Raw command:\n");
112 print_hex_dump_debug("DBG[MISC] coal ", DUMP_PREFIX_OFFSET, 16, 4,
113 cp, sizeof(*cp), false);
114 return -EINVAL;
115 }
116
117 static const struct ethtool_ops wil_ethtool_ops = {
118 .begin = wil_ethtoolops_begin,
119 .complete = wil_ethtoolops_complete,
120 .get_drvinfo = cfg80211_get_drvinfo,
121 .get_coalesce = wil_ethtoolops_get_coalesce,
122 .set_coalesce = wil_ethtoolops_set_coalesce,
123 };
124
wil_set_ethtoolops(struct net_device * ndev)125 void wil_set_ethtoolops(struct net_device *ndev)
126 {
127 ndev->ethtool_ops = &wil_ethtool_ops;
128 }
129
