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