1 /* 2 * Copyright (c) 2014 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, "%s()\n", __func__); 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, "%s()\n", __func__); 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 51 wil_dbg_misc(wil, "%s()\n", __func__); 52 53 tx_itr_en = wil_r(wil, RGF_DMA_ITR_TX_CNT_CTL); 54 if (tx_itr_en & BIT_DMA_ITR_TX_CNT_CTL_EN) 55 tx_itr_val = wil_r(wil, RGF_DMA_ITR_TX_CNT_TRSH); 56 57 rx_itr_en = wil_r(wil, RGF_DMA_ITR_RX_CNT_CTL); 58 if (rx_itr_en & BIT_DMA_ITR_RX_CNT_CTL_EN) 59 rx_itr_val = wil_r(wil, RGF_DMA_ITR_RX_CNT_TRSH); 60 61 cp->tx_coalesce_usecs = tx_itr_val; 62 cp->rx_coalesce_usecs = rx_itr_val; 63 return 0; 64 } 65 66 static int wil_ethtoolops_set_coalesce(struct net_device *ndev, 67 struct ethtool_coalesce *cp) 68 { 69 struct wil6210_priv *wil = ndev_to_wil(ndev); 70 71 wil_dbg_misc(wil, "%s(rx %d usec, tx %d usec)\n", __func__, 72 cp->rx_coalesce_usecs, cp->tx_coalesce_usecs); 73 74 if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR) { 75 wil_dbg_misc(wil, "No IRQ coalescing in monitor mode\n"); 76 return -EINVAL; 77 } 78 79 /* only @rx_coalesce_usecs and @tx_coalesce_usecs supported, 80 * ignore other parameters 81 */ 82 83 if (cp->rx_coalesce_usecs > WIL6210_ITR_TRSH_MAX || 84 cp->tx_coalesce_usecs > WIL6210_ITR_TRSH_MAX) 85 goto out_bad; 86 87 wil->tx_max_burst_duration = cp->tx_coalesce_usecs; 88 wil->rx_max_burst_duration = cp->rx_coalesce_usecs; 89 wil_configure_interrupt_moderation(wil); 90 91 return 0; 92 93 out_bad: 94 wil_dbg_misc(wil, "Unsupported coalescing params. Raw command:\n"); 95 print_hex_dump_debug("DBG[MISC] coal ", DUMP_PREFIX_OFFSET, 16, 4, 96 cp, sizeof(*cp), false); 97 return -EINVAL; 98 } 99 100 static const struct ethtool_ops wil_ethtool_ops = { 101 .begin = wil_ethtoolops_begin, 102 .complete = wil_ethtoolops_complete, 103 .get_drvinfo = cfg80211_get_drvinfo, 104 .get_coalesce = wil_ethtoolops_get_coalesce, 105 .set_coalesce = wil_ethtoolops_set_coalesce, 106 }; 107 108 void wil_set_ethtoolops(struct net_device *ndev) 109 { 110 ndev->ethtool_ops = &wil_ethtool_ops; 111 } 112