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 14 static int 15 wil_ethtoolops_get_coalesce(struct net_device *ndev, 16 struct ethtool_coalesce *cp, 17 struct kernel_ethtool_coalesce *kernel_coal, 18 struct netlink_ext_ack *extack) 19 { 20 struct wil6210_priv *wil = ndev_to_wil(ndev); 21 u32 tx_itr_en, tx_itr_val = 0; 22 u32 rx_itr_en, rx_itr_val = 0; 23 int ret; 24 25 mutex_lock(&wil->mutex); 26 wil_dbg_misc(wil, "ethtoolops_get_coalesce\n"); 27 28 ret = wil_pm_runtime_get(wil); 29 if (ret < 0) 30 goto out; 31 32 tx_itr_en = wil_r(wil, RGF_DMA_ITR_TX_CNT_CTL); 33 if (tx_itr_en & BIT_DMA_ITR_TX_CNT_CTL_EN) 34 tx_itr_val = wil_r(wil, RGF_DMA_ITR_TX_CNT_TRSH); 35 36 rx_itr_en = wil_r(wil, RGF_DMA_ITR_RX_CNT_CTL); 37 if (rx_itr_en & BIT_DMA_ITR_RX_CNT_CTL_EN) 38 rx_itr_val = wil_r(wil, RGF_DMA_ITR_RX_CNT_TRSH); 39 40 wil_pm_runtime_put(wil); 41 42 cp->tx_coalesce_usecs = tx_itr_val; 43 cp->rx_coalesce_usecs = rx_itr_val; 44 ret = 0; 45 46 out: 47 mutex_unlock(&wil->mutex); 48 return ret; 49 } 50 51 static int 52 wil_ethtoolops_set_coalesce(struct net_device *ndev, 53 struct ethtool_coalesce *cp, 54 struct kernel_ethtool_coalesce *kernel_coal, 55 struct netlink_ext_ack *extack) 56 { 57 struct wil6210_priv *wil = ndev_to_wil(ndev); 58 struct wireless_dev *wdev = ndev->ieee80211_ptr; 59 int ret; 60 61 mutex_lock(&wil->mutex); 62 wil_dbg_misc(wil, "ethtoolops_set_coalesce: rx %d usec, tx %d usec\n", 63 cp->rx_coalesce_usecs, cp->tx_coalesce_usecs); 64 65 if (wdev->iftype == NL80211_IFTYPE_MONITOR) { 66 wil_dbg_misc(wil, "No IRQ coalescing in monitor mode\n"); 67 ret = -EINVAL; 68 goto out; 69 } 70 71 /* only @rx_coalesce_usecs and @tx_coalesce_usecs supported, 72 * ignore other parameters 73 */ 74 75 if (cp->rx_coalesce_usecs > WIL6210_ITR_TRSH_MAX || 76 cp->tx_coalesce_usecs > WIL6210_ITR_TRSH_MAX) 77 goto out_bad; 78 79 wil->tx_max_burst_duration = cp->tx_coalesce_usecs; 80 wil->rx_max_burst_duration = cp->rx_coalesce_usecs; 81 82 ret = wil_pm_runtime_get(wil); 83 if (ret < 0) 84 goto out; 85 86 wil->txrx_ops.configure_interrupt_moderation(wil); 87 88 wil_pm_runtime_put(wil); 89 ret = 0; 90 91 out: 92 mutex_unlock(&wil->mutex); 93 return ret; 94 95 out_bad: 96 wil_dbg_misc(wil, "Unsupported coalescing params. Raw command:\n"); 97 print_hex_dump_debug("DBG[MISC] coal ", DUMP_PREFIX_OFFSET, 16, 4, 98 cp, sizeof(*cp), false); 99 mutex_unlock(&wil->mutex); 100 return -EINVAL; 101 } 102 103 static const struct ethtool_ops wil_ethtool_ops = { 104 .supported_coalesce_params = ETHTOOL_COALESCE_USECS, 105 .get_drvinfo = cfg80211_get_drvinfo, 106 .get_coalesce = wil_ethtoolops_get_coalesce, 107 .set_coalesce = wil_ethtoolops_set_coalesce, 108 }; 109 110 void wil_set_ethtoolops(struct net_device *ndev) 111 { 112 ndev->ethtool_ops = &wil_ethtool_ops; 113 } 114